diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index d10f45b..02169e0 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -23,6 +23,7 @@ jobs:
           set -e
           echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login git.nfteam.ovh -u "${{ secrets.REGISTRY_USER }}" --password-stdin
           docker build --build-arg VITE_API_URL="${VITE_API_URL}" \
+            --build-arg APP_BUILD="${GITHUB_SHA::12}" \
             -t "${IMAGE}:latest" -t "${IMAGE}:${GITHUB_SHA::12}" ./DataSentinel
           docker push --all-tags "${IMAGE}"
           echo "pushed ${IMAGE}"
diff --git a/DataSentinel/Dockerfile b/DataSentinel/Dockerfile
index 2ecad95..f410f58 100644
--- a/DataSentinel/Dockerfile
+++ b/DataSentinel/Dockerfile
@@ -11,6 +11,11 @@ ARG VITE_API_URL
 ENV VITE_API_URL=$VITE_API_URL
 RUN pnpm build
 
+# SHA du commit construit, servi sur /version.json : permet de vérifier quelle
+# version est réellement déployée sans se fier au cache du navigateur.
+ARG APP_BUILD=local
+RUN printf '{"build":"%s"}' "$APP_BUILD" > /app/dist/version.json
+
 FROM nginx:alpine
 COPY --from=build /app/dist /usr/share/nginx/html
 COPY nginx.conf /etc/nginx/conf.d/default.conf