diff --git a/.github/workflows/mac.yml b/.github/workflows/mac.yml
index 61be89b4544..e8600942985 100644
--- a/.github/workflows/mac.yml
+++ b/.github/workflows/mac.yml
@@ -45,9 +45,9 @@ jobs:
         plan:
         # - { ghc: "86"    , stack: "stack --stack-yaml=stack8.6.yaml" }
         # - { ghc: "88"  , stack: "stack --stack-yaml=stack8.8.yaml" }
-        - { ghc: "810" , stack: "stack --stack-yaml=stack8.10.yaml" }
+        # - { ghc: "810" , stack: "stack --stack-yaml=stack8.10.yaml" }
         # XXX func tests in bin should be run only with GHC 8.10 for now (see shelltest below) (?)
-        # - { ghc: "90" , stack: "stack --stack-yaml=stack.yaml" }
+        - { ghc: "90" , stack: "stack --stack-yaml=stack.yaml" }
 
     steps: