diff --git a/docker/owlbot/nodejs/Dockerfile b/docker/owlbot/nodejs/Dockerfile
index e1cf07aaa..e6dc7b194 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:3.9.5-buster
+FROM python:3.10.4-buster
 
 WORKDIR /
 
diff --git a/docker/owlbot/php/Dockerfile b/docker/owlbot/php/Dockerfile
index fa9dd0c14..d5034b8c2 100644
--- a/docker/owlbot/php/Dockerfile
+++ b/docker/owlbot/php/Dockerfile
@@ -16,7 +16,7 @@
 
 # build from the root of this repo:
 # docker build -t gcr.io/repo-automation-bots/owlbot-php -f docker/owlbot/php/Dockerfile .
-FROM python:3.9.5-buster
+FROM python:3.10.4-buster
 
 WORKDIR /