diff --git a/Project.toml b/Project.toml
index d89a0b5..328989c 100644
--- a/Project.toml
+++ b/Project.toml
@@ -24,7 +24,7 @@ Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 Contour = "0.6"
 ControlSystemIdentification = "2"
 ControlSystemsBase = "1"
-DataStructures = "0.18.22"
+DataStructures = "0.18.22, 0.19"
 EFIT = "1"
 IMAS = "1, 2, 3, 4, 5"
 IMASggd = "3.3"