diff --git a/.forgejo/workflows/build-docker.yaml b/.forgejo/workflows/build-docker.yaml
index 407c472..b521305 100644
--- a/.forgejo/workflows/build-docker.yaml
+++ b/.forgejo/workflows/build-docker.yaml
@@ -15,9 +15,9 @@ jobs:
       - uses: https://code.forgejo.org/actions/checkout@v4
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
-      - name: create-version-string
-        run: echo 'version-tag=$(git rev-parse --short HEAD)-$(date --utc --iso-8601)' >> $FORGEJO_OUTPUT
-      - run: echo ${{ steps.create-version-string.outputs.version-tag }}
+      - name: create_version_string
+        run: echo 'version_tag=$(git rev-parse --short HEAD)-$(date --utc --iso-8601)' >> $FORGEJO_OUTPUT
+      - run: echo ${{ steps.create_version_string.outputs.version_tag }}
       - name: Build and push
         uses: docker/build-push-action@v6
         with: