diff --git a/.github/workflows/pkg.yml b/.github/workflows/pkg.yml
index e63ddf61..e8608daf 100644
--- a/.github/workflows/pkg.yml
+++ b/.github/workflows/pkg.yml
@@ -327,9 +327,9 @@ jobs:
         # test for that O/S (remember to change debian:bullseye to the correct
         # O/S name!):
         #
-        # exclude:
-        #   - image: 'debian:bullseye'
-        #     mode: 'upgrade-from-published'
+        exclude:
+          - image: 'debian:bullseye'
+            mode: 'upgrade-from-published'
     steps:
     # Set some environment variables that will be available to "run" steps below in this job, and some output variables
     # that will be available in GH Action step definitions below.