diff --git a/.librarian/state.yaml b/.librarian/state.yaml
index c7c871274..98b1fe52d 100644
--- a/.librarian/state.yaml
+++ b/.librarian/state.yaml
@@ -1,4 +1,4 @@
-image: us-central1-docker.pkg.dev/cloud-sdk-librarian-prod/images-prod/python-librarian-generator:latest
+image: us-central1-docker.pkg.dev/cloud-sdk-librarian-prod/images-prod/python-librarian-generator@sha256:ce48ed695c727f7e13efd1fd68f466a55a0d772c87b69158720cec39965bc8b2
 libraries:
   - id: google-cloud-pubsub
     version: 2.33.0