diff --git a/.gitea/workflows/renovate.yml b/.gitea/workflows/renovate.yml
index 353b7c0..1cd89c9 100644
--- a/.gitea/workflows/renovate.yml
+++ b/.gitea/workflows/renovate.yml
@@ -18,7 +18,9 @@ jobs:
     runs-on: docker
     steps:
       - name: Run Renovate
-        uses: renovatebot/github-action@v40
+        # This action publishes only full semver tags (no moving major tag —
+        # @v46 / @v40 etc. 404). Pin a real release; Renovate keeps it bumped.
+        uses: renovatebot/github-action@v46.1.15
         env:
           # Self-hosted Gitea, not github.com.
           RENOVATE_PLATFORM: gitea