diff --git a/build-constraints.yaml b/build-constraints.yaml
index 89f8bbe7..162ff42c 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -29,6 +29,7 @@ packages:
         - agda2lagda
         - ListLike
         - haskell-src
+        - fix-whitespace
 
     "Diogo Biazus <diogo@biazus.ca>":
         - hasql-notifications