diff --git a/.kokoro/requirements.txt b/.kokoro/requirements.txt
index ee70211..ba6b4c7 100644
--- a/.kokoro/requirements.txt
+++ b/.kokoro/requirements.txt
@@ -8,9 +8,9 @@ build==1.6.1 \
     --hash=sha256:51cc11666391ab6f092070437ac747002ff46f3e4113a3622177ee6b488bfc53 \
     --hash=sha256:ecd351a4be9d35a9eaaba244a7687143c9c7d4aea6ac964e7e7ddab20cbcf4e7
     # via -r .kokoro/requirements.in
-certifi==2026.7.22 \
-    --hash=sha256:62f22742b58a1a33014a2b6b706588a8d7e2a88ae7bd1a6ebe8c992928483775 \
-    --hash=sha256:741e2c3b351ddf169a738da9f2c048608ff7f2c5cc02f1ebc6b118bb090d5d55
+certifi==2026.10.23 \
+    --hash=sha256:a9895e6e2758b371e0545e321a3a8fd1fcfd9829ada8824a936dfb16aaaf36cd \
+    --hash=sha256:e9b54de76e530bb6cf0ccd036787103acb58fd42ba930ea8bf948ddbaa2f61d1
     # via requests
 cffi==2.1.1 \
     --hash=sha256:046bfc24911b37851ee1b51aab8bffe713d89c68c6a057b09484ce9fd5f69b4e \