diff --git a/build-constraints.yaml b/build-constraints.yaml
index b73ceee2..5d66a7d6 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3354,7 +3354,7 @@ packages:
         - text-rope
 
     "Ashley Yakeley <ashley@semantic.org> @AshleyYakeley":
-        - countable
+        - countable < 1.1 # https://github.com/commercialhaskell/stackage/issues/6557
         - witness
         - open-witness