diff --git a/Dockerfile b/Dockerfile
index 2b23692..9b2754c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ WORKDIR /build
 RUN CGO_ENABLED=0 go build ./act.go
 
 # Main stage
-FROM python:3.9-slim-bullseye
+FROM python:3.13-slim-bullseye
 RUN python -m ensurepip
 RUN python -m pip install --user --upgrade flake8
 
diff --git a/Dockerfile.goreleaser b/Dockerfile.goreleaser
index b966aca..d87238b 100644
--- a/Dockerfile.goreleaser
+++ b/Dockerfile.goreleaser
@@ -1,4 +1,4 @@
-FROM python:3.9-slim-bullseye
+FROM python:3.13-slim-bullseye
 
 RUN python -m pip install --user --upgrade flake8