diff --git a/build-constraints.yaml b/build-constraints.yaml
index 0be5db67..be2411ae 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4493,6 +4493,10 @@ packages:
         - hunit-dejafu < 2.0.0.0
         - tasty-dejafu < 2.0.0.0
 
+        # https://github.com/commercialhaskell/stackage/issues/4381
+        - scalpel-core < 0.6.0
+        - scalpel < 0.6.0
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of