diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7476b79c..f3cea53c 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8454,6 +8454,9 @@ packages:
 
         # https://github.com/commercialhaskell/stackage/issues/7406
         - hasql < 1.7
+
+        # https://github.com/commercialhaskell/stackage/issues/7407
+        - json-spec < 0.4
     # end of Stackage upper bounds
 # end of packages