diff --git a/cv_server/requirements.txt b/cv_server/requirements.txt
index b957cd0..b0172d9 100644
--- a/cv_server/requirements.txt
+++ b/cv_server/requirements.txt
@@ -15,7 +15,7 @@ itsdangerous==0.24
 Jinja2==2.10
 MarkupSafe==1.0
 Pillow==5.0.0
-protobuf==3.5.1
+protobuf==3.15.0
 pyasn1==0.4.2
 pyasn1-modules==0.2.1
 pytz==2017.3