diff --git a/synthtool/gcp/templates/python_library/.kokoro/requirements.txt b/synthtool/gcp/templates/python_library/.kokoro/requirements.txt
index 9c1b9be34..05dc4672e 100644
--- a/synthtool/gcp/templates/python_library/.kokoro/requirements.txt
+++ b/synthtool/gcp/templates/python_library/.kokoro/requirements.txt
@@ -20,9 +20,9 @@ cachetools==5.2.0 \
     --hash=sha256:6a94c6402995a99c3970cc7e4884bb60b4a8639938157eeed436098bf9831757 \
     --hash=sha256:f9f17d2aec496a9aa6b76f53e3b614c965223c061982d434d160f930c698a9db
     # via google-auth
-certifi==2022.9.24 \
-    --hash=sha256:0d9c601124e5a6ba9712dbc60d9c53c21e34f5f641fe83002317394311bdce14 \
-    --hash=sha256:90c1a32f1d68f940488354e36370f6cca89f0f106db09518524c88d6ed83f382
+certifi==2022.12.7 \
+    --hash=sha256:35824b4c3a97115964b408844d64aa14db1cc518f6562e8d7261699d1350a9e3 \
+    --hash=sha256:4ad3232f5e926d6718ec31cfc1fcadfde020920e278684144551c91769c7bc18
     # via requests
 cffi==1.15.1 \
     --hash=sha256:00a9ed42e88df81ffae7a8ab6d9356b371399b91dbdf0c3cb1e84c03a13aceb5 \