diff --git a/Project.toml b/Project.toml
index f735fd3..01d50b3 100755
--- a/Project.toml
+++ b/Project.toml
@@ -46,6 +46,7 @@ ThreadsX = "ac1d9e8a-700a-412c-b207-f0111f4b6c0d"
 
 [compat]
 CategoricalArrays = "0.10"
+DataStructures = "0.19"
 Random = "1"
 julia = "1"