diff --git a/build-constraints.yaml b/build-constraints.yaml
index c0576154..42254e7c 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1197,6 +1197,7 @@ packages:
         - numeric-extras
         - parsers
         - pointed
+        - ptrdiff
         - profunctors
         - promises
         - rcu