diff --git a/build-constraints.yaml b/build-constraints.yaml
index b2e8063a..6d313c73 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3597,6 +3597,7 @@ packages:
         - cabal-install-parsers
         - alfred-margaret
         - hackage-revdeps
+        - COrdering
 
     "Ashley Yakeley <ashley@semantic.org> @AshleyYakeley":
         - countable