diff --git a/docker/owlbot/nodejs/Dockerfile b/docker/owlbot/nodejs/Dockerfile
index d4cca488e..9e8f0c84c 100644
--- a/docker/owlbot/nodejs/Dockerfile
+++ b/docker/owlbot/nodejs/Dockerfile
@@ -16,7 +16,7 @@
 
 # build from the root of this repo:
 # docker build -t gcr.io/repo-automation-bots/owlbot-nodejs -f docker/owlbot/nodejs/Dockerfile .
-FROM python:3.9.4-buster
+FROM python:3.9.5-buster
 
 WORKDIR /
 
diff --git a/docker/owlbot/python/Dockerfile b/docker/owlbot/python/Dockerfile
index 01c2e362d..59166f372 100644
--- a/docker/owlbot/python/Dockerfile
+++ b/docker/owlbot/python/Dockerfile
@@ -16,7 +16,7 @@
 
 # build from the root of this repo:
 # docker build -t gcr.io/repo-automation-bots/owlbot-python -f docker/owlbot/python/Dockerfile .
-FROM python:3.8.9-buster
+FROM python:3.9.5-buster
 
 WORKDIR /