diff --git a/Project.toml b/Project.toml
index 6bffc6f..860c757 100644
--- a/Project.toml
+++ b/Project.toml
@@ -11,3 +11,5 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 
 [compat]
 julia = "1.6"
+PartialFunctions = "1"
+SpecialFunctions = "2"