diff --git a/build-constraints.yaml b/build-constraints.yaml
index 143eee01..ff268577 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -646,6 +646,9 @@ packages:
         - quickcheck-higherorder
         - test-fun
 
+    "Solomon Bothwell <ssbothwell@gmail.com> @solomon-b":
+        - monoidal-functors
+
     "Tobias Dammers <tdammers@gmail.com> @tdammers":
         - ginger
         - yeshql