diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 5f087fc08..d285e4f50 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -478,7 +478,7 @@ jobs:
     name: Test flakyness
     runs-on: ubuntu-20.04
     container:
-      image: ${{ needs.params.outputs.fail_test_image_name }}:${{ needs.params.outputs.pg16_version }}${{ needs.params.outputs.image_suffix }}
+      image: ${{ needs.params.outputs.fail_test_image_name }}:${{ fromJson(needs.params.outputs.pg16_version).full }}${{ needs.params.outputs.image_suffix }}
       options: --user root
     env:
       runs: 8