diff --git a/build-constraints.yaml b/build-constraints.yaml
index 88e63e62..dc6333dd 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3475,6 +3475,9 @@ packages:
         - numhask < 0.2.1
         - numhask-prelude < 0.0.4
 
+        # https://github.com/fpco/stackage/pull/3581
+        - validity < 0.6
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of