diff --git a/build-constraints.yaml b/build-constraints.yaml
index 06d436a5..b687e4b7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7856,6 +7856,9 @@ packages:
         - hasql-pool < 1.4
         - hasql-th < 0.4.1
         - hasql-transaction < 1.2.2
+
+        # https://github.com/commercialhaskell/stackage/issues/7921
+        - scotty < 0.30
     # end of Stackage upper bounds
 # end of packages