diff --git a/build-constraints.yaml b/build-constraints.yaml
index 11f8d27a..df3b42a8 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8034,8 +8034,8 @@ packages:
 
     "Stackage upper bounds":
         # https://github.com/commercialhaskell/stackage/issues/7031
-        # aeson < 2.2.0
-        # attoparsec-aeson < 2.2
+        - aeson < 2.2.0
+        - attoparsec-aeson < 2.2
 
         # https://github.com/commercialhaskell/stackage/issues/7055
         - dependent-sum-template < 0.1.2