diff --git a/build-constraints.yaml b/build-constraints.yaml
index b3176a4b..908973c7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -510,7 +510,8 @@ packages:
     #     - bloodhound
 
     "Adam Bergmark <adam@bergmark.nl> @bergmark":
-        - aeson
+        # https://github.com/fpco/stackage/issues/1398
+        - aeson < 0.11.2.0
         - fay
         - fay-base
         - fay-dom