diff --git a/.gitea/workflows/build-base.yml b/.gitea/workflows/build-base.yml
index 4d1f1c5..d9db94b 100644
--- a/.gitea/workflows/build-base.yml
+++ b/.gitea/workflows/build-base.yml
@@ -26,7 +26,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Login to registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4
         with:
           registry: ${{ secrets.REGISTRY_URL }}
           username: ${{ secrets.REGISTRY_USER }}
diff --git a/.gitea/workflows/build-cli.yml b/.gitea/workflows/build-cli.yml
index c4af75a..2e3d070 100644
--- a/.gitea/workflows/build-cli.yml
+++ b/.gitea/workflows/build-cli.yml
@@ -29,7 +29,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Login to registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4
         with:
           registry: ${{ secrets.REGISTRY_URL }}
           username: ${{ secrets.REGISTRY_USER }}
diff --git a/.gitea/workflows/build-terraform-shell.yml b/.gitea/workflows/build-terraform-shell.yml
index 8a97914..4c9a1b5 100644
--- a/.gitea/workflows/build-terraform-shell.yml
+++ b/.gitea/workflows/build-terraform-shell.yml
@@ -29,7 +29,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Login to registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4
         with:
           registry: ${{ secrets.REGISTRY_URL }}
           username: ${{ secrets.REGISTRY_USER }}