diff --git a/.github/workflows/docker.build.yml b/.github/workflows/docker.build.yml
index 2428d17..2ca6e6f 100644
--- a/.github/workflows/docker.build.yml
+++ b/.github/workflows/docker.build.yml
@@ -29,7 +29,7 @@ jobs:
         uses: docker/setup-buildx-action@v3.3.0
       -
         name: Cache Docker layers
-        uses: actions/cache@v4.0.2
+        uses: actions/cache@v4
         with:
           path: /tmp/.buildx-cache
           key: ${{ runner.os }}-buildx-${{ github.sha }}
diff --git a/Dockerfile b/Dockerfile
index 1f105e9..2a57373 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,11 @@
-FROM wikibase/wdqs:0.3.135-wmde.13
+ARG VERSION=0.3.135-wmde.13
+FROM wikibase/wdqs:$VERSION
+ARG VERSION
 
 LABEL org.opencontainers.image.source="https://github.com/wbstack/queryservice"
 
+ENV USER_AGENT="Wikibase.Cloud Query Service ($VERSION); https://github.com/wbstack/queryservice"
+
 COPY ./entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh