diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 48cfe5a988..99bb024ae5 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -275,7 +275,7 @@ jobs:
     runs-on: ubuntu-latest
     services:
       postgres:
-        image: tensorchord/pgvecto-rs:pg14-v0.2.0
+        image: tensorchord/pgvecto-rs:pg14-v0.2.0@sha256:90724186f0a3517cf6914295b5ab410db9ce23190a2d9d0b9dd6463e3fa298f0
         env:
           POSTGRES_PASSWORD: postgres
           POSTGRES_USER: postgres