diff --git a/build-constraints.yaml b/build-constraints.yaml
index 6a681584..390ba7bf 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7320,6 +7320,9 @@ packages:
         # https://github.com/commercialhaskell/stackage/issues/6613
         - turtle < 1.6
 
+        # https://github.com/commercialhaskell/stackage/issues/6615
+        - aeson < 2.1
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of