diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7c297a71..4b58132e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -398,6 +398,7 @@ packages:
     "Tom McLaughlin <tom@codedown.io> @thomasjm":
         - aeson-typescript
         - fsnotify
+        - myers-diff
         - sandwich
         - sandwich-hedgehog
         - sandwich-quickcheck