diff --git a/.kokoro/requirements.txt b/.kokoro/requirements.txt
index f221154..fac3016 100644
--- a/.kokoro/requirements.txt
+++ b/.kokoro/requirements.txt
@@ -10,9 +10,9 @@ attrs==22.2.0 \
     # via
     #   -r requirements.in
     #   gcp-releasetool
-cachetools==5.2.0 \
-    --hash=sha256:6a94c6402995a99c3970cc7e4884bb60b4a8639938157eeed436098bf9831757 \
-    --hash=sha256:f9f17d2aec496a9aa6b76f53e3b614c965223c061982d434d160f930c698a9db
+cachetools==5.5.2 \
+    --hash=sha256:1a661caa9175d26759571b2e19580f9d6393969e5dfca11fdb1f947a23e640d4 \
+    --hash=sha256:d26a22bcc62eb95c3beabd9f1ee5e820d3d2704fe2967cbe350e20c8ffcd3f0a
     # via
     #   -r requirements.in
     #   google-auth