diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 821532a..14bbea1 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -18,7 +18,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       -
         name: Docker meta
         id: meta
@@ -51,11 +51,10 @@ jobs:
             password: ${{ secrets.DOCKER_PASSWORD }}
       -
         name: Build and push
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
             context: .
             platforms: linux/amd64,linux/arm64
             push: ${{ github.event_name != 'pull_request' }}
             tags: ${{ steps.meta.outputs.tags }}
             labels: ${{ steps.meta.outputs.labels }}
-
diff --git a/Dockerfile b/Dockerfile
index b86ed12..8d56931 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,8 @@
 FROM alpine:3
 
-ARG CERTBOT_VERSION=2.11.0
-ARG PYTHON_VERSION=3.12
-ARG POSTFIX_VERSION=3.9.0
+ARG CERTBOT_VERSION=5.1.0
+ARG PYTHON_VERSION=3.14
+ARG POSTFIX_VERSION=3.10.5
 ARG DCRON_VERSION=4.5
 
 # set version label