diff --git a/build-constraints.yaml b/build-constraints.yaml
index 24b43b60..59364cc8 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7329,6 +7329,9 @@ packages:
         - inspection-testing < 0.5
         - tasty-inspection-testing < 0.2
 
+        # https://github.com/commercialhaskell/stackage/issues/6621
+        - some < 1.0.4
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of