diff --git a/client/Dockerfile b/client/Dockerfile
index 111028a..b2054a1 100644
--- a/client/Dockerfile
+++ b/client/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.13.2-slim
+FROM python:3.13.3-slim
 
 ENV DEVPICLIENT_CLIENTDIR=/devpi/client
 RUN mkdir -p $DEVPICLIENT_CLIENTDIR
diff --git a/client/Dockerfile-alpine b/client/Dockerfile-alpine
index 0d11173..9e99aff 100644
--- a/client/Dockerfile-alpine
+++ b/client/Dockerfile-alpine
@@ -1,4 +1,4 @@
-FROM python:3.13.2-alpine
+FROM python:3.13.3-alpine
 
 ENV DEVPICLIENT_CLIENTDIR=/devpi/client
 RUN mkdir -p $DEVPICLIENT_CLIENTDIR