diff --git a/appengine/flexible/analytics/requirements.txt b/appengine/flexible/analytics/requirements.txt
index 3996cdf445..4d6ab43b4b 100644
--- a/appengine/flexible/analytics/requirements.txt
+++ b/appengine/flexible/analytics/requirements.txt
@@ -1,6 +1,4 @@
-Flask==3.0.3; python_version > '3.6'
-Flask==2.3.3; python_version < '3.7'
-Werkzeug==3.0.3; python_version > '3.6'
-Werkzeug==2.3.8; python_version < '3.7'
+Flask==3.1.3; python_version >= '3.9'
+Werkzeug==3.1.8; python_version >= '3.9'
 gunicorn==23.0.0
 requests[security]==2.31.0
diff --git a/appengine/flexible/datastore/requirements.txt b/appengine/flexible/datastore/requirements.txt
index 995f336547..ae69349556 100644
--- a/appengine/flexible/datastore/requirements.txt
+++ b/appengine/flexible/datastore/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 google-cloud-datastore==2.20.2
 gunicorn==23.0.0
diff --git a/appengine/flexible/hello_world/requirements.txt b/appengine/flexible/hello_world/requirements.txt
index bdb61ec241..74b2a6cf56 100644
--- a/appengine/flexible/hello_world/requirements.txt
+++ b/appengine/flexible/hello_world/requirements.txt
@@ -1,2 +1,2 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==22.0.0
diff --git a/appengine/flexible/metadata/requirements.txt b/appengine/flexible/metadata/requirements.txt
index f2983c54b0..7af49fd854 100644
--- a/appengine/flexible/metadata/requirements.txt
+++ b/appengine/flexible/metadata/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 requests[security]==2.31.0
diff --git a/appengine/flexible/multiple_services/gateway-service/requirements.txt b/appengine/flexible/multiple_services/gateway-service/requirements.txt
index daf3cbf7cd..965030d74c 100644
--- a/appengine/flexible/multiple_services/gateway-service/requirements.txt
+++ b/appengine/flexible/multiple_services/gateway-service/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 requests==2.31.0
diff --git a/appengine/flexible/multiple_services/static-service/requirements.txt b/appengine/flexible/multiple_services/static-service/requirements.txt
index daf3cbf7cd..965030d74c 100644
--- a/appengine/flexible/multiple_services/static-service/requirements.txt
+++ b/appengine/flexible/multiple_services/static-service/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 requests==2.31.0
diff --git a/appengine/flexible/numpy/requirements.txt b/appengine/flexible/numpy/requirements.txt
index 1e5cc4304a..539b054530 100644
--- a/appengine/flexible/numpy/requirements.txt
+++ b/appengine/flexible/numpy/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 numpy==2.2.4; python_version > '3.9'
 numpy==1.26.4; python_version == '3.9'
diff --git a/appengine/flexible/pubsub/requirements.txt b/appengine/flexible/pubsub/requirements.txt
index 2c40e84343..8d4f07227d 100644
--- a/appengine/flexible/pubsub/requirements.txt
+++ b/appengine/flexible/pubsub/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 google-cloud-pubsub==2.28.0
 gunicorn==23.0.0
diff --git a/appengine/flexible/scipy/requirements.txt b/appengine/flexible/scipy/requirements.txt
index fe4d29690e..1618a1f37e 100644
--- a/appengine/flexible/scipy/requirements.txt
+++ b/appengine/flexible/scipy/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 imageio==2.35.1; python_version == '3.8'
 imageio==2.36.1; python_version >= '3.9'
diff --git a/appengine/flexible/static_files/requirements.txt b/appengine/flexible/static_files/requirements.txt
index 9ea9c8a931..6b693f8f92 100644
--- a/appengine/flexible/static_files/requirements.txt
+++ b/appengine/flexible/static_files/requirements.txt
@@ -1,2 +1,2 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
diff --git a/appengine/flexible/storage/requirements.txt b/appengine/flexible/storage/requirements.txt
index 99fefaec60..7f0f110434 100644
--- a/appengine/flexible/storage/requirements.txt
+++ b/appengine/flexible/storage/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 google-cloud-storage==2.9.0
 gunicorn==23.0.0
diff --git a/appengine/flexible/tasks/requirements.txt b/appengine/flexible/tasks/requirements.txt
index 3a938a57de..d3eb6cec11 100644
--- a/appengine/flexible/tasks/requirements.txt
+++ b/appengine/flexible/tasks/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 google-cloud-tasks==2.18.0
diff --git a/appengine/flexible/twilio/requirements.txt b/appengine/flexible/twilio/requirements.txt
index 75303cef9a..87973ae1e8 100644
--- a/appengine/flexible/twilio/requirements.txt
+++ b/appengine/flexible/twilio/requirements.txt
@@ -1,6 +1,4 @@
-Flask==3.0.3; python_version > '3.6'
-Flask==2.3.3; python_version < '3.7'
-Werkzeug==3.0.3; python_version > '3.6'
-Werkzeug==2.3.8; python_version < '3.7'
+Flask==3.1.3; python_version >= '3.9'
+Werkzeug==3.1.8; python_version >= '3.9'
 gunicorn==23.0.0
 twilio==9.0.3
diff --git a/appengine/flexible/websockets/requirements.txt b/appengine/flexible/websockets/requirements.txt
index c1525d3607..403f3a8d9c 100644
--- a/appengine/flexible/websockets/requirements.txt
+++ b/appengine/flexible/websockets/requirements.txt
@@ -1,6 +1,6 @@
-Flask==1.1.4 # it seems like Flask-sockets doesn't play well with 2.0+
+Flask==3.1.3; python_version >= '3.9' # it seems like Flask-sockets doesn't play well with 2.0+
 Flask-Sockets==0.2.1
 gunicorn==23.0.0
 requests==2.31.0
 markupsafe==2.0.1
-Werkzeug==1.0.1;
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/appengine/standard/analytics/requirements.txt b/appengine/standard/analytics/requirements.txt
index 22b490a10f..2e5ea9da56 100644
--- a/appengine/standard/analytics/requirements.txt
+++ b/appengine/standard/analytics/requirements.txt
@@ -1,6 +1,4 @@
-Flask==1.1.4; python_version < '3.0'
-Flask==3.0.0; python_version > '3.0'
+Flask==3.1.3; python_version >= '3.9'
 requests==2.27.1
 requests-toolbelt==0.10.1
-Werkzeug==1.0.1; python_version < '3.0'
-Werkzeug==3.0.3; python_version > '3.0'
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/appengine/standard/firebase/firenotes/backend/requirements.txt b/appengine/standard/firebase/firenotes/backend/requirements.txt
index e9d7419191..cd3d917790 100644
--- a/appengine/standard/firebase/firenotes/backend/requirements.txt
+++ b/appengine/standard/firebase/firenotes/backend/requirements.txt
@@ -1,10 +1,8 @@
-Flask==1.1.4; python_version < '3.0'
-Flask==3.0.0; python_version > '3.0'
+Flask==3.1.3; python_version >= '3.9'
 pyjwt==1.7.1; python_version < '3.0'
 flask-cors==6.0.0
 google-auth==2.17.3; python_version < '3.0'
 google-auth==2.17.3; python_version > '3.0'
 requests==2.27.1
 requests-toolbelt==0.10.1
-Werkzeug==1.0.1; python_version < '3.0'
-Werkzeug==3.0.3; python_version > '3.0'
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/appengine/standard/flask/hello_world/requirements.txt b/appengine/standard/flask/hello_world/requirements.txt
index 8b13789179..e69de29bb2 100644
--- a/appengine/standard/flask/hello_world/requirements.txt
+++ b/appengine/standard/flask/hello_world/requirements.txt
@@ -1 +0,0 @@
-
diff --git a/appengine/standard/iap/requirements.txt b/appengine/standard/iap/requirements.txt
index 118baae465..f20de702c7 100644
--- a/appengine/standard/iap/requirements.txt
+++ b/appengine/standard/iap/requirements.txt
@@ -1,5 +1,3 @@
-Flask==1.1.4; python_version < '3.0'
-Flask==2.1.0; python_version > '3.0'
-Werkzeug==1.0.1; python_version < '3.0'
-Werkzeug==3.0.3; python_version > '3.0'
+Flask==3.1.3; python_version >= '3.9'
+Werkzeug==3.1.8; python_version >= '3.9'
 six==1.16.0
diff --git a/appengine/standard/migration/memorystore/requirements.txt b/appengine/standard/migration/memorystore/requirements.txt
index 23045baf75..eae19eaa0a 100644
--- a/appengine/standard/migration/memorystore/requirements.txt
+++ b/appengine/standard/migration/memorystore/requirements.txt
@@ -1,6 +1,4 @@
 redis==4.5.4; python_version > '3.0'
 redis<5; python_version < '3.0'
-Flask==1.1.4; python_version < '3.0'
-Flask==3.0.0; python_version > '3.0'
-Werkzeug==1.0.1; python_version < '3.0'
-Werkzeug==3.0.3; python_version > '3.0'
+Flask==3.1.3; python_version >= '3.9'
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/appengine/standard/migration/ndb/overview/requirements.txt b/appengine/standard/migration/ndb/overview/requirements.txt
index b728da8775..87fb3651f8 100644
--- a/appengine/standard/migration/ndb/overview/requirements.txt
+++ b/appengine/standard/migration/ndb/overview/requirements.txt
@@ -2,7 +2,5 @@
 rsa==4.5; python_version < '3'
 googleapis_common_protos
 google-cloud-ndb
-Flask==1.1.4; python_version < '3.0'
-Flask==3.0.0; python_version > '3.0'
-Werkzeug==1.0.1; python_version < '3.0'
-Werkzeug==3.0.3; python_version > '3.0'
+Flask==3.1.3; python_version >= '3.9'
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/appengine/standard/migration/ndb/redis_cache/requirements.txt b/appengine/standard/migration/ndb/redis_cache/requirements.txt
index b728da8775..87fb3651f8 100644
--- a/appengine/standard/migration/ndb/redis_cache/requirements.txt
+++ b/appengine/standard/migration/ndb/redis_cache/requirements.txt
@@ -2,7 +2,5 @@
 rsa==4.5; python_version < '3'
 googleapis_common_protos
 google-cloud-ndb
-Flask==1.1.4; python_version < '3.0'
-Flask==3.0.0; python_version > '3.0'
-Werkzeug==1.0.1; python_version < '3.0'
-Werkzeug==3.0.3; python_version > '3.0'
+Flask==3.1.3; python_version >= '3.9'
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/appengine/standard/migration/storage/requirements.txt b/appengine/standard/migration/storage/requirements.txt
index 78127d4f6e..39a44d1651 100644
--- a/appengine/standard/migration/storage/requirements.txt
+++ b/appengine/standard/migration/storage/requirements.txt
@@ -1,6 +1,4 @@
 google-cloud-storage==1.44.0; python_version < '3.7'
 google-cloud-storage==2.8.0; python_version > '3.6'
-Flask==1.1.4; python_version < '3.0'
-Flask==3.0.0; python_version > '3.0'
-Werkzeug==1.0.1; python_version < '3.0'
-Werkzeug==3.0.3; python_version > '3.0'
+Flask==3.1.3; python_version >= '3.9'
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/appengine/standard/migration/taskqueue/pull-counter/requirements.txt b/appengine/standard/migration/taskqueue/pull-counter/requirements.txt
index 76c398af45..a1fcde1e7f 100644
--- a/appengine/standard/migration/taskqueue/pull-counter/requirements.txt
+++ b/appengine/standard/migration/taskqueue/pull-counter/requirements.txt
@@ -1,9 +1,4 @@
-Flask==1.1.4; python_version < '3.0'
-Flask==3.0.0; python_version > '3.0'
+Flask==3.1.3; python_version >= '3.9'
 google-cloud-datastore==2.15.1 ; python_version >= "3.0"
-google-cloud-datastore<2 ; python_version < "3.0"
 google-cloud-pubsub==2.16.0 ; python_version >= "3.0"
-# 1.7.0 is the latest compatible version for Python 2.
-google-cloud-pubsub==1.7.2 ; python_version < "3.0"
-Werkzeug==1.0.1; python_version < '3.0'
-Werkzeug==3.0.3; python_version > '3.0'
+Werkzeug==3.1.8; python_version >= '3.9'
\ No newline at end of file
diff --git a/appengine/standard/migration/urlfetch/async/requirements.txt b/appengine/standard/migration/urlfetch/async/requirements.txt
index 86a92de08d..e6e0632825 100644
--- a/appengine/standard/migration/urlfetch/async/requirements.txt
+++ b/appengine/standard/migration/urlfetch/async/requirements.txt
@@ -1,7 +1,5 @@
-Flask==1.1.4; python_version < '3.0'
-Flask==3.0.0; python_version > '3.0'
+Flask==3.1.3; python_version >= '3.9'
 requests==2.27.1
 requests-futures==1.0.0
 requests-toolbelt==0.10.1
-Werkzeug==1.0.1; python_version < '3.0'
-Werkzeug==3.0.3; python_version > '3.0'
+Werkzeug==3.1.8; python_version >= '3.9'
\ No newline at end of file
diff --git a/appengine/standard/migration/urlfetch/requests/requirements.txt b/appengine/standard/migration/urlfetch/requests/requirements.txt
index 22b490a10f..2e5ea9da56 100644
--- a/appengine/standard/migration/urlfetch/requests/requirements.txt
+++ b/appengine/standard/migration/urlfetch/requests/requirements.txt
@@ -1,6 +1,4 @@
-Flask==1.1.4; python_version < '3.0'
-Flask==3.0.0; python_version > '3.0'
+Flask==3.1.3; python_version >= '3.9'
 requests==2.27.1
 requests-toolbelt==0.10.1
-Werkzeug==1.0.1; python_version < '3.0'
-Werkzeug==3.0.3; python_version > '3.0'
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/appengine/standard/ndb/transactions/requirements.txt b/appengine/standard/ndb/transactions/requirements.txt
index aca673e4e0..76aaddfd79 100644
--- a/appengine/standard/ndb/transactions/requirements.txt
+++ b/appengine/standard/ndb/transactions/requirements.txt
@@ -1,4 +1,2 @@
-Flask==1.1.4; python_version < '3.0'
-Flask==3.0.0; python_version > '3.0'
-Werkzeug==1.0.1; python_version < '3.0'
-Werkzeug==3.0.3; python_version > '3.0'
\ No newline at end of file
+Flask==3.1.3; python_version >= '3.9'
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/appengine/standard/taskqueue/counter/requirements.txt b/appengine/standard/taskqueue/counter/requirements.txt
index 8b13789179..e69de29bb2 100644
--- a/appengine/standard/taskqueue/counter/requirements.txt
+++ b/appengine/standard/taskqueue/counter/requirements.txt
@@ -1 +0,0 @@
-
diff --git a/appengine/standard/urlfetch/requests/requirements.txt b/appengine/standard/urlfetch/requests/requirements.txt
index 22b490a10f..2e5ea9da56 100644
--- a/appengine/standard/urlfetch/requests/requirements.txt
+++ b/appengine/standard/urlfetch/requests/requirements.txt
@@ -1,6 +1,4 @@
-Flask==1.1.4; python_version < '3.0'
-Flask==3.0.0; python_version > '3.0'
+Flask==3.1.3; python_version >= '3.9'
 requests==2.27.1
 requests-toolbelt==0.10.1
-Werkzeug==1.0.1; python_version < '3.0'
-Werkzeug==3.0.3; python_version > '3.0'
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/appengine/standard_python3/bigquery/requirements.txt b/appengine/standard_python3/bigquery/requirements.txt
index d27f78612d..c89c5277ee 100644
--- a/appengine/standard_python3/bigquery/requirements.txt
+++ b/appengine/standard_python3/bigquery/requirements.txt
@@ -1,2 +1,2 @@
 google-cloud-bigquery==3.10.0
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
diff --git a/appengine/standard_python3/building-an-app/building-an-app-1/requirements.txt b/appengine/standard_python3/building-an-app/building-an-app-1/requirements.txt
index 047e9501aa..b3ff32e568 100644
--- a/appengine/standard_python3/building-an-app/building-an-app-1/requirements.txt
+++ b/appengine/standard_python3/building-an-app/building-an-app-1/requirements.txt
@@ -1 +1 @@
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
diff --git a/appengine/standard_python3/building-an-app/building-an-app-2/requirements.txt b/appengine/standard_python3/building-an-app/building-an-app-2/requirements.txt
index 13f13f5bbc..43f9b65de9 100644
--- a/appengine/standard_python3/building-an-app/building-an-app-2/requirements.txt
+++ b/appengine/standard_python3/building-an-app/building-an-app-2/requirements.txt
@@ -1,2 +1,2 @@
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
 google-cloud-datastore==2.15.1
diff --git a/appengine/standard_python3/building-an-app/building-an-app-3/requirements.txt b/appengine/standard_python3/building-an-app/building-an-app-3/requirements.txt
index 8610c24825..b1c8e3e689 100644
--- a/appengine/standard_python3/building-an-app/building-an-app-3/requirements.txt
+++ b/appengine/standard_python3/building-an-app/building-an-app-3/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
 google-cloud-datastore==2.15.1
 google-auth==2.17.3
 requests==2.28.2
diff --git a/appengine/standard_python3/building-an-app/building-an-app-4/requirements.txt b/appengine/standard_python3/building-an-app/building-an-app-4/requirements.txt
index 8610c24825..b1c8e3e689 100644
--- a/appengine/standard_python3/building-an-app/building-an-app-4/requirements.txt
+++ b/appengine/standard_python3/building-an-app/building-an-app-4/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
 google-cloud-datastore==2.15.1
 google-auth==2.17.3
 requests==2.28.2
diff --git a/appengine/standard_python3/bundled-services/blobstore/flask/requirements.txt b/appengine/standard_python3/bundled-services/blobstore/flask/requirements.txt
index 2d4ffcf586..cec709a163 100644
--- a/appengine/standard_python3/bundled-services/blobstore/flask/requirements.txt
+++ b/appengine/standard_python3/bundled-services/blobstore/flask/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
 appengine-python-standard>=0.2.3
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/appengine/standard_python3/bundled-services/deferred/flask/requirements.txt b/appengine/standard_python3/bundled-services/deferred/flask/requirements.txt
index 63f4b5339b..75b0329ce0 100644
--- a/appengine/standard_python3/bundled-services/deferred/flask/requirements.txt
+++ b/appengine/standard_python3/bundled-services/deferred/flask/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
 appengine-python-standard>=0.3.1
-Werkzeug==3.0.3
\ No newline at end of file
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/appengine/standard_python3/bundled-services/mail/flask/requirements.txt b/appengine/standard_python3/bundled-services/mail/flask/requirements.txt
index ea7004ffc9..e9946967ce 100644
--- a/appengine/standard_python3/bundled-services/mail/flask/requirements.txt
+++ b/appengine/standard_python3/bundled-services/mail/flask/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
 appengine-python-standard==1.1.4
-Werkzeug==3.0.3
-MarkupSafe==2.1.3
\ No newline at end of file
+Werkzeug==3.1.8; python_version >= '3.9'
+MarkupSafe==2.1.3
diff --git a/appengine/standard_python3/cloudsql/requirements.txt b/appengine/standard_python3/cloudsql/requirements.txt
index 7fe39c1a1b..92a0ae9d05 100644
--- a/appengine/standard_python3/cloudsql/requirements.txt
+++ b/appengine/standard_python3/cloudsql/requirements.txt
@@ -1,4 +1,4 @@
-flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
 # psycopg2==2.8.4
 # you will need either the binary or the regular - for more info see http://initd.org/psycopg/docs/install.html
 psycopg2-binary==2.9.11
diff --git a/appengine/standard_python3/custom-server/requirements.txt b/appengine/standard_python3/custom-server/requirements.txt
index d3bc9fe5b1..11e0a1e7a2 100644
--- a/appengine/standard_python3/custom-server/requirements.txt
+++ b/appengine/standard_python3/custom-server/requirements.txt
@@ -1,2 +1,2 @@
 uwsgi==2.0.22
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
diff --git a/appengine/standard_python3/hello_world/requirements.txt b/appengine/standard_python3/hello_world/requirements.txt
index 047e9501aa..b3ff32e568 100644
--- a/appengine/standard_python3/hello_world/requirements.txt
+++ b/appengine/standard_python3/hello_world/requirements.txt
@@ -1 +1 @@
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
diff --git a/appengine/standard_python3/migration/urlfetch/requirements.txt b/appengine/standard_python3/migration/urlfetch/requirements.txt
index b366196b57..05d9bfda9b 100644
--- a/appengine/standard_python3/migration/urlfetch/requirements.txt
+++ b/appengine/standard_python3/migration/urlfetch/requirements.txt
@@ -1,3 +1,3 @@
 requests==2.28.2
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
 google-auth==2.17.3
diff --git a/appengine/standard_python3/pubsub/requirements.txt b/appengine/standard_python3/pubsub/requirements.txt
index 52d31b8c04..067f794f80 100644
--- a/appengine/standard_python3/pubsub/requirements.txt
+++ b/appengine/standard_python3/pubsub/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
 google-api-python-client==2.86.0
 google-auth==2.17.3
 google-cloud-pubsub==2.16.0
diff --git a/appengine/standard_python3/redis/requirements.txt b/appengine/standard_python3/redis/requirements.txt
index dddcdd089b..f188e5dab4 100644
--- a/appengine/standard_python3/redis/requirements.txt
+++ b/appengine/standard_python3/redis/requirements.txt
@@ -1,2 +1,2 @@
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
 redis==4.5.4
diff --git a/appengine/standard_python3/spanner/requirements.txt b/appengine/standard_python3/spanner/requirements.txt
index 0bbdc887f9..73db7a7166 100644
--- a/appengine/standard_python3/spanner/requirements.txt
+++ b/appengine/standard_python3/spanner/requirements.txt
@@ -1,2 +1,2 @@
 google-cloud-spanner==3.31.0
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
diff --git a/appengine/standard_python3/warmup/requirements.txt b/appengine/standard_python3/warmup/requirements.txt
index 047e9501aa..b3ff32e568 100644
--- a/appengine/standard_python3/warmup/requirements.txt
+++ b/appengine/standard_python3/warmup/requirements.txt
@@ -1 +1 @@
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
diff --git a/auth/end-user/web/requirements.txt b/auth/end-user/web/requirements.txt
index f40ba1c62a..25ac6ed9f2 100644
--- a/auth/end-user/web/requirements.txt
+++ b/auth/end-user/web/requirements.txt
@@ -2,5 +2,5 @@ google-auth==2.38.0
 google-auth-oauthlib==1.2.1
 google-auth-httplib2==0.2.0
 google-api-python-client==2.131.0
-flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 requests==2.31.0
diff --git a/bigquery/remote-function/document/requirements-test.txt b/bigquery/remote-function/document/requirements-test.txt
index ac936365b2..87181ecea7 100644
--- a/bigquery/remote-function/document/requirements-test.txt
+++ b/bigquery/remote-function/document/requirements-test.txt
@@ -1,4 +1,4 @@
-Flask==2.2.2
+Flask==3.1.3; python_version >= '3.9'
 functions-framework==3.9.2
 google-cloud-documentai==3.0.1
 pytest==9.0.3; python_version >= "3.10"
diff --git a/bigquery/remote-function/document/requirements.txt b/bigquery/remote-function/document/requirements.txt
index 5d039df280..8d5a741313 100644
--- a/bigquery/remote-function/document/requirements.txt
+++ b/bigquery/remote-function/document/requirements.txt
@@ -1,4 +1,4 @@
-Flask==2.2.2
+Flask==3.1.3; python_version >= '3.9'
 functions-framework==3.9.2
 google-cloud-documentai==3.0.1
-Werkzeug==2.3.8
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/bigquery/remote-function/translate/requirements-test.txt b/bigquery/remote-function/translate/requirements-test.txt
index adb53acce3..d5b31aa84f 100644
--- a/bigquery/remote-function/translate/requirements-test.txt
+++ b/bigquery/remote-function/translate/requirements-test.txt
@@ -1,4 +1,4 @@
-Flask==2.2.2
+Flask==3.1.3; python_version >= '3.9'
 functions-framework==3.9.2
 google-cloud-translate==3.18.0
 pytest==9.0.3; python_version >= "3.10"
diff --git a/bigquery/remote-function/translate/requirements.txt b/bigquery/remote-function/translate/requirements.txt
index 8f3760f384..3608debb3e 100644
--- a/bigquery/remote-function/translate/requirements.txt
+++ b/bigquery/remote-function/translate/requirements.txt
@@ -1,4 +1,4 @@
-Flask==2.2.2
+Flask==3.1.3; python_version >= '3.9'
 functions-framework==3.9.2
 google-cloud-translate==3.18.0
-Werkzeug==2.3.8
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/bigquery/remote-function/vision/requirements-test.txt b/bigquery/remote-function/vision/requirements-test.txt
index 20f0bc405f..be97aeae79 100644
--- a/bigquery/remote-function/vision/requirements-test.txt
+++ b/bigquery/remote-function/vision/requirements-test.txt
@@ -1,4 +1,4 @@
-Flask==2.2.2
+Flask==3.1.3; python_version >= '3.9'
 functions-framework==3.9.2
 google-cloud-vision==3.8.1
 pytest==9.0.3; python_version >= "3.10"
diff --git a/bigquery/remote-function/vision/requirements.txt b/bigquery/remote-function/vision/requirements.txt
index 6737756c47..f84e430b9b 100644
--- a/bigquery/remote-function/vision/requirements.txt
+++ b/bigquery/remote-function/vision/requirements.txt
@@ -1,4 +1,4 @@
-Flask==2.2.2
+Flask==3.1.3; python_version >= '3.9'
 functions-framework==3.9.2
 google-cloud-vision==3.8.1
-Werkzeug==2.3.8
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/cloud-media-livestream/keypublisher/requirements.txt b/cloud-media-livestream/keypublisher/requirements.txt
index d09861d381..88b7dbe05c 100644
--- a/cloud-media-livestream/keypublisher/requirements.txt
+++ b/cloud-media-livestream/keypublisher/requirements.txt
@@ -1,4 +1,4 @@
-Flask==2.2.5
+Flask==3.1.3; python_version >= '3.9'
 functions-framework==3.9.2
 google-cloud-secret-manager==2.21.1
 lxml==5.2.1
@@ -8,4 +8,4 @@ requests==2.32.4
 signxml==4.0.4
 pytest==9.0.3; python_version >= "3.10"
 pytest-mock==3.14.0
-Werkzeug==3.0.6
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/cloud-sql/mysql/sqlalchemy/requirements.txt b/cloud-sql/mysql/sqlalchemy/requirements.txt
index bcb4ea5c4b..19acd5abd5 100644
--- a/cloud-sql/mysql/sqlalchemy/requirements.txt
+++ b/cloud-sql/mysql/sqlalchemy/requirements.txt
@@ -1,7 +1,7 @@
-Flask==2.2.2
+Flask==3.1.3; python_version >= '3.9'
 SQLAlchemy==2.0.40
 PyMySQL==1.1.2
 gunicorn==23.0.0
 cloud-sql-python-connector==1.20.1
 functions-framework==3.9.2
-Werkzeug==2.3.8
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/cloud-sql/postgres/sqlalchemy/requirements.txt b/cloud-sql/postgres/sqlalchemy/requirements.txt
index e44a280e6b..900d922d5f 100644
--- a/cloud-sql/postgres/sqlalchemy/requirements.txt
+++ b/cloud-sql/postgres/sqlalchemy/requirements.txt
@@ -1,7 +1,7 @@
-Flask==2.2.2
+Flask==3.1.3; python_version >= '3.9'
 pg8000==1.31.5
 SQLAlchemy==2.0.40
 cloud-sql-python-connector==1.20.1
 gunicorn==23.0.0
 functions-framework==3.9.2
-Werkzeug==2.3.8
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/cloud-sql/sql-server/sqlalchemy/requirements.txt b/cloud-sql/sql-server/sqlalchemy/requirements.txt
index 32660dce88..17a6f71b96 100644
--- a/cloud-sql/sql-server/sqlalchemy/requirements.txt
+++ b/cloud-sql/sql-server/sqlalchemy/requirements.txt
@@ -1,4 +1,4 @@
-Flask==2.2.2
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 python-tds==1.16.0
 pyopenssl==26.0.0
@@ -6,4 +6,4 @@ SQLAlchemy==2.0.40
 cloud-sql-python-connector==1.20.1
 sqlalchemy-pytds==1.0.2
 functions-framework==3.9.2
-Werkzeug==2.3.8
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/cloud_scheduler/snippets/requirements.txt b/cloud_scheduler/snippets/requirements.txt
index af65635c6c..7901025517 100644
--- a/cloud_scheduler/snippets/requirements.txt
+++ b/cloud_scheduler/snippets/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 google-cloud-scheduler==2.14.1
-Werkzeug==3.1.5
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/composer/2022_airflow_summit/requirements.txt b/composer/2022_airflow_summit/requirements.txt
index 50a4b3df15..5c87d9ea9b 100644
--- a/composer/2022_airflow_summit/requirements.txt
+++ b/composer/2022_airflow_summit/requirements.txt
@@ -1,4 +1,4 @@
 # be sure to update the constraints file to match
 # see https://airflow.apache.org/docs/apache-airflow/stable/installation/installing-from-pypi.html#constraints-files
-apache-airflow==2.6.3
-apache-airflow-providers-google==10.2.0
+apache-airflow==3.2.1; python_version >= 3.10
+apache-airflow-providers-google==21.3.0; python_version >= 3.10
diff --git a/composer/blog/gcp-tech-blog/data-orchestration-with-composer/requirements.txt b/composer/blog/gcp-tech-blog/data-orchestration-with-composer/requirements.txt
index fc3c4940fa..feb5dd63b4 100644
--- a/composer/blog/gcp-tech-blog/data-orchestration-with-composer/requirements.txt
+++ b/composer/blog/gcp-tech-blog/data-orchestration-with-composer/requirements.txt
@@ -1,6 +1,6 @@
 # be sure to update the constraints file to match
 # see https://airflow.apache.org/docs/apache-airflow/stable/installation/installing-from-pypi.html#constraints-files
-apache-airflow[google]==2.6.3
+apache-airflow[google]==3.2.1; python_version >= 3.10
 apache-airflow-providers-apache-beam==5.1.1
 apache-airflow-providers-slack==7.3.2
 apache-airflow-providers-http==4.4.2
diff --git a/composer/cicd_sample/requirements.txt b/composer/cicd_sample/requirements.txt
index 1eb3eeda32..3fdb3d0d76 100644
--- a/composer/cicd_sample/requirements.txt
+++ b/composer/cicd_sample/requirements.txt
@@ -1,3 +1,3 @@
 # be sure to update the constraints file to match
 # see https://airflow.apache.org/docs/apache-airflow/stable/installation/installing-from-pypi.html#constraints-files
-apache-airflow==2.6.3
+apache-airflow==3.2.1; python_version >= 3.10
diff --git a/compute/managed-instances/demo/requirements.txt b/compute/managed-instances/demo/requirements.txt
index 73c648b4ff..83e0d0ce58 100644
--- a/compute/managed-instances/demo/requirements.txt
+++ b/compute/managed-instances/demo/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 requests==2.31.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/dataflow/run_template/requirements-test.txt b/dataflow/run_template/requirements-test.txt
index 341e9cabab..95e3b7c780 100644
--- a/dataflow/run_template/requirements-test.txt
+++ b/dataflow/run_template/requirements-test.txt
@@ -1,3 +1,3 @@
 pytest==9.0.3; python_version >= "3.10"
-flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 backoff==2.2.1; python_version >= "3.7"
diff --git a/datastore/cloud-ndb/requirements.txt b/datastore/cloud-ndb/requirements.txt
index 35949d51f5..8de16307c2 100644
--- a/datastore/cloud-ndb/requirements.txt
+++ b/datastore/cloud-ndb/requirements.txt
@@ -1,3 +1,3 @@
 google-cloud-ndb==2.3.4
-Flask==3.0.3
-Werkzeug==3.0.6
+Flask==3.1.3; python_version >= '3.9'
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/dialogflow-cx/requirements.txt b/dialogflow-cx/requirements.txt
index 5c29bf4a7b..0c22df9053 100644
--- a/dialogflow-cx/requirements.txt
+++ b/dialogflow-cx/requirements.txt
@@ -1,8 +1,8 @@
 google-cloud-dialogflow-cx==2.0.0
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 python-dateutil==2.9.0.post0
 functions-framework==3.9.2
-Werkzeug==3.1.5
+Werkzeug==3.1.8; python_version >= '3.9'
 termcolor==3.0.0; python_version >= "3.9"
 termcolor==2.4.0; python_version == "3.8"
-pyaudio==0.2.14
\ No newline at end of file
+pyaudio==0.2.14
diff --git a/dialogflow/requirements.txt b/dialogflow/requirements.txt
index ed176a19af..38398eaee7 100644
--- a/dialogflow/requirements.txt
+++ b/dialogflow/requirements.txt
@@ -1,6 +1,6 @@
 google-cloud-dialogflow==2.46.0
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 pyaudio==0.2.14
 termcolor==3.0.0
 functions-framework==3.9.2
-Werkzeug==3.0.6
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/endpoints/getting-started/requirements.txt b/endpoints/getting-started/requirements.txt
index ea1c7021fd..fe93519c14 100644
--- a/endpoints/getting-started/requirements.txt
+++ b/endpoints/getting-started/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 flask-cors==6.0.1
 gunicorn==23.0.0
 six==1.16.0
@@ -6,4 +6,4 @@ pyyaml==6.0.2
 requests==2.31.0
 google-auth==2.38.0
 google-auth-oauthlib==1.2.1
-Werkzeug==3.0.6
\ No newline at end of file
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/eventarc/audit-storage/requirements.txt b/eventarc/audit-storage/requirements.txt
index fcbf5097b8..62b5bdfe9a 100644
--- a/eventarc/audit-storage/requirements.txt
+++ b/eventarc/audit-storage/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 cloudevents==1.11.0
diff --git a/eventarc/audit_iam/requirements.txt b/eventarc/audit_iam/requirements.txt
index 1131734978..5cf94554ea 100644
--- a/eventarc/audit_iam/requirements.txt
+++ b/eventarc/audit_iam/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 google-events==0.14.0
 cloudevents==1.11.0
diff --git a/eventarc/generic/requirements.txt b/eventarc/generic/requirements.txt
index 9ea9c8a931..6b693f8f92 100644
--- a/eventarc/generic/requirements.txt
+++ b/eventarc/generic/requirements.txt
@@ -1,2 +1,2 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
diff --git a/eventarc/pubsub/requirements.txt b/eventarc/pubsub/requirements.txt
index 9ea9c8a931..6b693f8f92 100644
--- a/eventarc/pubsub/requirements.txt
+++ b/eventarc/pubsub/requirements.txt
@@ -1,2 +1,2 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
diff --git a/eventarc/storage_handler/requirements.txt b/eventarc/storage_handler/requirements.txt
index f54b23da04..dced49189d 100644
--- a/eventarc/storage_handler/requirements.txt
+++ b/eventarc/storage_handler/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 google-events==0.14.0
 cloudevents==1.11.0
diff --git a/functions/concepts-filesystem/requirements-test.txt b/functions/concepts-filesystem/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/concepts-filesystem/requirements-test.txt
+++ b/functions/concepts-filesystem/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/concepts-requests/requirements-test.txt b/functions/concepts-requests/requirements-test.txt
index 489873e5d0..80befdef04 100644
--- a/functions/concepts-requests/requirements-test.txt
+++ b/functions/concepts-requests/requirements-test.txt
@@ -1,5 +1,5 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
 requests==2.31.0
 responses==0.17.0; python_version < '3.7'
 responses==0.23.1; python_version > '3.6'
diff --git a/functions/concepts-stateless/requirements-test.txt b/functions/concepts-stateless/requirements-test.txt
index 3a22512ad6..6be17631c4 100644
--- a/functions/concepts-stateless/requirements-test.txt
+++ b/functions/concepts-stateless/requirements-test.txt
@@ -1,3 +1,3 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
 functions-framework==3.9.2
diff --git a/functions/env_vars/requirements-test.txt b/functions/env_vars/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/env_vars/requirements-test.txt
+++ b/functions/env_vars/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/helloworld/requirements.txt b/functions/helloworld/requirements.txt
index 8c9cb7ea6d..11e15adca3 100644
--- a/functions/helloworld/requirements.txt
+++ b/functions/helloworld/requirements.txt
@@ -1,4 +1,4 @@
 functions-framework==3.9.2
-flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 google-cloud-error-reporting==1.11.1
 MarkupSafe==2.1.3
diff --git a/functions/http/requirements-test.txt b/functions/http/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/http/requirements-test.txt
+++ b/functions/http/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/memorystore/redis/requirements-test.txt b/functions/memorystore/redis/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/memorystore/redis/requirements-test.txt
+++ b/functions/memorystore/redis/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/security/requirements-test.txt b/functions/security/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/security/requirements-test.txt
+++ b/functions/security/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/slack/requirements.txt b/functions/slack/requirements.txt
index a6d5d05bb7..049295aa4b 100644
--- a/functions/slack/requirements.txt
+++ b/functions/slack/requirements.txt
@@ -1,4 +1,4 @@
 google-api-python-client==2.131.0
-flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 functions-framework==3.9.2
 slackclient==2.9.4
diff --git a/functions/tips-avoid-infinite-retries/requirements-test.txt b/functions/tips-avoid-infinite-retries/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/tips-avoid-infinite-retries/requirements-test.txt
+++ b/functions/tips-avoid-infinite-retries/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/tips-connection-pooling/requirements-test.txt b/functions/tips-connection-pooling/requirements-test.txt
index 489873e5d0..80befdef04 100644
--- a/functions/tips-connection-pooling/requirements-test.txt
+++ b/functions/tips-connection-pooling/requirements-test.txt
@@ -1,5 +1,5 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
 requests==2.31.0
 responses==0.17.0; python_version < '3.7'
 responses==0.23.1; python_version > '3.6'
diff --git a/functions/tips-gcp-apis/requirements-test.txt b/functions/tips-gcp-apis/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/tips-gcp-apis/requirements-test.txt
+++ b/functions/tips-gcp-apis/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/tips-lazy-globals/requirements-test.txt b/functions/tips-lazy-globals/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/tips-lazy-globals/requirements-test.txt
+++ b/functions/tips-lazy-globals/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/tips-retry/requirements-test.txt b/functions/tips-retry/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/tips-retry/requirements-test.txt
+++ b/functions/tips-retry/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/tips-scopes/requirements-test.txt b/functions/tips-scopes/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/tips-scopes/requirements-test.txt
+++ b/functions/tips-scopes/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/v2/http_logging/requirements-test.txt b/functions/v2/http_logging/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/v2/http_logging/requirements-test.txt
+++ b/functions/v2/http_logging/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/v2/response_streaming/requirements.txt b/functions/v2/response_streaming/requirements.txt
index a66e00cc23..616b4166dc 100644
--- a/functions/v2/response_streaming/requirements.txt
+++ b/functions/v2/response_streaming/requirements.txt
@@ -1,5 +1,5 @@
-Flask==2.2.2
+Flask==3.1.3; python_version >= '3.9'
 functions-framework==3.9.2
 google-cloud-bigquery==3.27.0
 pytest==9.0.3; python_version >= "3.10"
-Werkzeug==2.3.8
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/functions/v2/tips-avoid-infinite-retries/requirements-test.txt b/functions/v2/tips-avoid-infinite-retries/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/v2/tips-avoid-infinite-retries/requirements-test.txt
+++ b/functions/v2/tips-avoid-infinite-retries/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/v2/tips-retry/requirements-test.txt b/functions/v2/tips-retry/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/v2/tips-retry/requirements-test.txt
+++ b/functions/v2/tips-retry/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/v2/typed/googlechatbot/requirements-test.txt b/functions/v2/typed/googlechatbot/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/v2/typed/googlechatbot/requirements-test.txt
+++ b/functions/v2/typed/googlechatbot/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/functions/v2/typed/greeting/requirements-test.txt b/functions/v2/typed/greeting/requirements-test.txt
index 5be5b32d46..8805fc0af6 100644
--- a/functions/v2/typed/greeting/requirements-test.txt
+++ b/functions/v2/typed/greeting/requirements-test.txt
@@ -1,2 +1,2 @@
-flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
diff --git a/iap/app_engine_app/requirements.txt b/iap/app_engine_app/requirements.txt
index 3954d17e73..76aaddfd79 100644
--- a/iap/app_engine_app/requirements.txt
+++ b/iap/app_engine_app/requirements.txt
@@ -1,2 +1,2 @@
-Flask==3.1.3
-Werkzeug==3.1.4
+Flask==3.1.3; python_version >= '3.9'
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/iap/requirements.txt b/iap/requirements.txt
index 452dc0220c..7ef1aef012 100644
--- a/iap/requirements.txt
+++ b/iap/requirements.txt
@@ -1,9 +1,9 @@
 cryptography==46.0.7
-Flask==3.1.3
+Flask==3.1.3; python_version >= '3.9'
 google-auth==2.38.0
 gunicorn==23.0.0
 requests==2.32.4
 requests-toolbelt==1.0.0
-Werkzeug==3.1.4
+Werkzeug==3.1.8; python_version >= '3.9'
 google-cloud-iam~=2.17.0
 PyJWT~=2.10.1
\ No newline at end of file
diff --git a/memorystore/redis/requirements.txt b/memorystore/redis/requirements.txt
index 62c1bce675..b723bd25cc 100644
--- a/memorystore/redis/requirements.txt
+++ b/memorystore/redis/requirements.txt
@@ -11,8 +11,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 # [START memorystore_requirements]
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 redis==6.0.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
 # [END memorystore_requirements]
diff --git a/monitoring/opencensus/requirements.txt b/monitoring/opencensus/requirements.txt
index 77821d121a..01843db604 100644
--- a/monitoring/opencensus/requirements.txt
+++ b/monitoring/opencensus/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 google-api-core==2.17.1
 google-auth==2.38.0
 googleapis-common-protos==1.66.0
@@ -8,4 +8,4 @@ opencensus-ext-prometheus==0.2.1
 prometheus-client==0.21.1
 prometheus-flask-exporter==0.23.2
 requests==2.31.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/monitoring/prometheus/requirements.txt b/monitoring/prometheus/requirements.txt
index 83b43f830a..cf7afd2009 100644
--- a/monitoring/prometheus/requirements.txt
+++ b/monitoring/prometheus/requirements.txt
@@ -1,8 +1,8 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 google-api-core==2.17.1
 google-auth==2.38.0
 googleapis-common-protos==1.66.0
 prometheus-client==0.21.1
 prometheus-flask-exporter==0.23.2
 requests==2.31.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/people-and-planet-ai/geospatial-classification/serving_app/requirements.txt b/people-and-planet-ai/geospatial-classification/serving_app/requirements.txt
index a96216e7d7..1d903e8cff 100644
--- a/people-and-planet-ai/geospatial-classification/serving_app/requirements.txt
+++ b/people-and-planet-ai/geospatial-classification/serving_app/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 tensorflow==2.12.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/people-and-planet-ai/land-cover-classification/serving/requirements.txt b/people-and-planet-ai/land-cover-classification/serving/requirements.txt
index ecf54b40e4..35fe32b48c 100644
--- a/people-and-planet-ai/land-cover-classification/serving/requirements.txt
+++ b/people-and-planet-ai/land-cover-classification/serving/requirements.txt
@@ -1,6 +1,6 @@
 # Requirements for the prediction web service.
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 earthengine-api==1.5.9
 gunicorn==23.0.0
 tensorflow==2.12.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/people-and-planet-ai/timeseries-classification/requirements.txt b/people-and-planet-ai/timeseries-classification/requirements.txt
index c97c968672..dc5e3cf4ee 100644
--- a/people-and-planet-ai/timeseries-classification/requirements.txt
+++ b/people-and-planet-ai/timeseries-classification/requirements.txt
@@ -1,7 +1,7 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 apache-beam[gcp]==2.46.0
 google-cloud-aiplatform==1.47.0
 gunicorn==23.0.0
 pandas==2.2.3
 tensorflow==2.12.1
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/people-and-planet-ai/weather-forecasting/serving/requirements.txt b/people-and-planet-ai/weather-forecasting/serving/requirements.txt
index a862608066..7fdab058bc 100644
--- a/people-and-planet-ai/weather-forecasting/serving/requirements.txt
+++ b/people-and-planet-ai/weather-forecasting/serving/requirements.txt
@@ -1,7 +1,6 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
-Werkzeug==3.0.3
-
+Werkzeug==3.1.8; python_version >= '3.9'
 # Local packages.
 ./weather-data
 ./weather-model
diff --git a/practice-folder/beginner-sample/requirements.txt b/practice-folder/beginner-sample/requirements.txt
index 95fef4eb66..b3ff32e568 100644
--- a/practice-folder/beginner-sample/requirements.txt
+++ b/practice-folder/beginner-sample/requirements.txt
@@ -1 +1 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
diff --git a/profiler/appengine/flexible/requirements.txt b/profiler/appengine/flexible/requirements.txt
index 31fd601964..5377b69afc 100644
--- a/profiler/appengine/flexible/requirements.txt
+++ b/profiler/appengine/flexible/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 google-cloud-profiler==4.1.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/profiler/appengine/standard_python37/requirements.txt b/profiler/appengine/standard_python37/requirements.txt
index b4e3738644..8f0ccea361 100644
--- a/profiler/appengine/standard_python37/requirements.txt
+++ b/profiler/appengine/standard_python37/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.0
+Flask==3.1.3; python_version >= '3.9'
 google-cloud-profiler==4.0.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/recaptcha_enterprise/demosite/app/requirements.txt b/recaptcha_enterprise/demosite/app/requirements.txt
index 99a041bbcf..dabd15daaa 100644
--- a/recaptcha_enterprise/demosite/app/requirements.txt
+++ b/recaptcha_enterprise/demosite/app/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.1.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==25.1.0
 google-cloud-recaptcha-enterprise==1.30.0
-Werkzeug==3.1.6
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/recaptcha_enterprise/snippets/requirements-test.txt b/recaptcha_enterprise/snippets/requirements-test.txt
index c8433d91a3..30cd11ecb9 100644
--- a/recaptcha_enterprise/snippets/requirements-test.txt
+++ b/recaptcha_enterprise/snippets/requirements-test.txt
@@ -1,6 +1,6 @@
 selenium==4.10.0
-Flask==2.2.2
-Werkzeug==2.3.8
+Flask==3.1.3; python_version >= '3.9'
 pytest==9.0.3; python_version >= "3.10"
+Werkzeug==3.1.8; python_version >= '3.9'
 pytest-flask==1.2.0
 webdriver-manager==4.0.2
\ No newline at end of file
diff --git a/run/hello-broken/requirements.txt b/run/hello-broken/requirements.txt
index afee035f31..44e9a29e30 100644
--- a/run/hello-broken/requirements.txt
+++ b/run/hello-broken/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/run/helloworld/requirements.txt b/run/helloworld/requirements.txt
index 64cd68f0f5..2ad24efe99 100644
--- a/run/helloworld/requirements.txt
+++ b/run/helloworld/requirements.txt
@@ -1,3 +1,3 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
-Werkzeug==3.1.6
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/run/idp-sql/requirements.txt b/run/idp-sql/requirements.txt
index a60c4dbc2d..b4a32f7f62 100644
--- a/run/idp-sql/requirements.txt
+++ b/run/idp-sql/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 SQLAlchemy==2.0.40
 pg8000==1.31.5
 gunicorn==23.0.0
diff --git a/run/image-processing/requirements.txt b/run/image-processing/requirements.txt
index b8eb7260a2..4ff58f7c79 100644
--- a/run/image-processing/requirements.txt
+++ b/run/image-processing/requirements.txt
@@ -1,6 +1,6 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 google-cloud-storage==2.12.0
 google-cloud-vision==3.8.1
 gunicorn==23.0.0
 Wand==0.6.13
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/run/logging-manual/requirements.txt b/run/logging-manual/requirements.txt
index afee035f31..44e9a29e30 100644
--- a/run/logging-manual/requirements.txt
+++ b/run/logging-manual/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/run/markdown-preview/editor/requirements.txt b/run/markdown-preview/editor/requirements.txt
index ca153b0518..4a7c8724ef 100644
--- a/run/markdown-preview/editor/requirements.txt
+++ b/run/markdown-preview/editor/requirements.txt
@@ -1,5 +1,5 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 google-auth==2.38.0
 requests==2.31.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/run/markdown-preview/renderer/requirements.txt b/run/markdown-preview/renderer/requirements.txt
index d88f947ec8..accf453044 100644
--- a/run/markdown-preview/renderer/requirements.txt
+++ b/run/markdown-preview/renderer/requirements.txt
@@ -1,6 +1,6 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 Markdown==3.7
 bleach==6.2.0; python_version >= "3.9"
 bleach==6.1.0; python_version <= "3.8"
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/run/pubsub/requirements.txt b/run/pubsub/requirements.txt
index afee035f31..44e9a29e30 100644
--- a/run/pubsub/requirements.txt
+++ b/run/pubsub/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/run/service-auth/requirements.txt b/run/service-auth/requirements.txt
index 212a56f530..e473b34f72 100644
--- a/run/service-auth/requirements.txt
+++ b/run/service-auth/requirements.txt
@@ -1,5 +1,5 @@
 google-auth==2.40.1
 google-cloud-run==0.10.18
 requests==2.32.3
-Flask==3.1.1
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
diff --git a/run/system-package/requirements.txt b/run/system-package/requirements.txt
index afee035f31..44e9a29e30 100644
--- a/run/system-package/requirements.txt
+++ b/run/system-package/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
 pytest==9.0.3; python_version >= "3.10"
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/tpu/requirements.txt b/tpu/requirements.txt
index dd7f3105d3..a9fd87dda1 100644
--- a/tpu/requirements.txt
+++ b/tpu/requirements.txt
@@ -1,3 +1 @@
 google-cloud-tpu==1.19.1
-
-
diff --git a/trace/cloud-trace-demo-app-opentelemetry/app/requirements.txt b/trace/cloud-trace-demo-app-opentelemetry/app/requirements.txt
index 7fae68682b..95af865493 100644
--- a/trace/cloud-trace-demo-app-opentelemetry/app/requirements.txt
+++ b/trace/cloud-trace-demo-app-opentelemetry/app/requirements.txt
@@ -1,8 +1,8 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 gunicorn==23.0.0
 opentelemetry-exporter-gcp-trace==1.7.0
 opentelemetry-propagator-gcp==1.7.0
 opentelemetry-instrumentation-flask==0.34b0
 opentelemetry-instrumentation-requests==0.34b0
 google-cloud-trace==1.14.1
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'
diff --git a/trace/trace-python-sample-opentelemetry/requirements.txt b/trace/trace-python-sample-opentelemetry/requirements.txt
index ee7b59a182..27db65e103 100644
--- a/trace/trace-python-sample-opentelemetry/requirements.txt
+++ b/trace/trace-python-sample-opentelemetry/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.3
+Flask==3.1.3; python_version >= '3.9'
 opentelemetry-exporter-gcp-trace==1.7.0
 opentelemetry-propagator-gcp==1.7.0
-Werkzeug==3.0.3
+Werkzeug==3.1.8; python_version >= '3.9'