diff --git a/build-constraints.yaml b/build-constraints.yaml
index ae0af731..4582b11d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -6732,7 +6732,7 @@ packages:
       - lucid < 2.9.13
 
       # https://github.com/commercialhaskell/stackage/issues/6242
-      - happy < 1.21
+      # happy < 1.21
 
       # https://github.com/commercialhaskell/stackage/issues/6243
       - jose < 0.9