diff --git a/build-constraints.yaml b/build-constraints.yaml
index c49d9aff..87df2afa 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1356,7 +1356,7 @@ packages:
         - bloodhound
 
     "Adam Bergmark <adam@bergmark.nl> @bergmark":
-        - aeson
+        - aeson < 2.2.0 # https://github.com/commercialhaskell/stackage/issues/7031
         - HUnit
         - attoparsec-iso8601
         - feed