diff --git a/.github/workflows/post-merge-to-build.yml b/.github/workflows/post-merge-to-build.yml
index 29ebb4b6..6cb0998e 100644
--- a/.github/workflows/post-merge-to-build.yml
+++ b/.github/workflows/post-merge-to-build.yml
@@ -18,7 +18,7 @@ jobs:
           fetch-depth: "0"
 
       - name: Login to GDS Dev Dynatrace Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: khw46367.live.dynatrace.com
           username: khw46367
diff --git a/.github/workflows/post-merge-to-dev.yml b/.github/workflows/post-merge-to-dev.yml
index 170a09a1..d77b4524 100644
--- a/.github/workflows/post-merge-to-dev.yml
+++ b/.github/workflows/post-merge-to-dev.yml
@@ -22,7 +22,7 @@ jobs:
         uses: docker/setup-qemu-action@v3
 
       - name: Login to GDS Dev Dynatrace Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: khw46367.live.dynatrace.com
           username: khw46367