diff --git a/Project.toml b/Project.toml
index 68a6ac7..855bf03 100644
--- a/Project.toml
+++ b/Project.toml
@@ -14,4 +14,5 @@ PythonCall = "6099a3de-0909-46bc-b1f4-468b9a2dfc0d"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 
 [compat]
+Functors = "0.4"
 julia = "1.9"