diff --git a/build-constraints.yaml b/build-constraints.yaml
index a497871b..ab59ccc3 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8427,6 +8427,7 @@ packages:
 
         # https://github.com/commercialhaskell/stackage/issues/7391
         - QuickCheck < 2.15
+        - step-function < 0.2.1
 
         # https://github.com/commercialhaskell/stackage/issues/7403
         - base-compat < 0.14