diff --git a/Project.toml b/Project.toml
index 3fa1a96..ce7de42 100644
--- a/Project.toml
+++ b/Project.toml
@@ -17,7 +17,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 [compat]
 ArgParse = "1"
 ColorSchemes = "3"
-IMASdd = "2, 3"
+IMASdd = "2, 3, 4"
 Interpolations = "0.15"
 NearestNeighbors = "0.4"
 RecipesBase = "1"