diff --git a/synthtool/gcp/templates/python_library/.kokoro/requirements.txt b/synthtool/gcp/templates/python_library/.kokoro/requirements.txt
index 0332d3267..16170d0ca 100644
--- a/synthtool/gcp/templates/python_library/.kokoro/requirements.txt
+++ b/synthtool/gcp/templates/python_library/.kokoro/requirements.txt
@@ -467,9 +467,9 @@ typing-extensions==4.4.0 \
     --hash=sha256:1511434bb92bf8dd198c12b1cc812e800d4181cfcb867674e0f8279cc93087aa \
     --hash=sha256:16fa4864408f655d35ec496218b85f79b3437c829e93320c7c9215ccfd92489e
     # via -r requirements.in
-urllib3==1.26.17 \
-    --hash=sha256:24d6a242c28d29af46c3fae832c36db3bbebcc533dd1bb549172cd739c82df21 \
-    --hash=sha256:94a757d178c9be92ef5539b8840d48dc9cf1b2709c9d6b588232a055c524458b
+urllib3==1.26.18 \
+    --hash=sha256:34b97092d7e0a3a8cf7cd10e386f401b3737364026c45e622aa02903dffe0f07 \
+    --hash=sha256:f8ecc1bba5667413457c529ab955bf8c67b45db799d159066261719e328580a0
     # via
     #   requests
     #   twine