diff --git a/Project.toml b/Project.toml
index f735fd3..57bf5da 100755
--- a/Project.toml
+++ b/Project.toml
@@ -45,6 +45,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 ThreadsX = "ac1d9e8a-700a-412c-b207-f0111f4b6c0d"
 
 [compat]
+AbstractTrees = "0.4"
 CategoricalArrays = "0.10"
 Random = "1"
 julia = "1"