diff --git a/requirements-dev.txt b/requirements-dev.txt
index ba124ff..b404111 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -12,7 +12,7 @@ appdirs==1.4.4
     # via sphinx-immaterial
 babel==2.18.0
     # via sphinx
-certifi==2026.1.4
+certifi==2026.2.25
     # via requests
 charset-normalizer==3.4.4
     # via requests
diff --git a/requirements.txt b/requirements.txt
index 1168baf..088b832 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@
 #
 #    pip-compile --output-file=requirements.txt --strip-extras pyproject.toml
 #
-certifi==2026.1.4
+certifi==2026.2.25
     # via requests
 charset-normalizer==3.4.4
     # via requests