diff --git a/Project.toml b/Project.toml
index 2128c756..aec89502 100644
--- a/Project.toml
+++ b/Project.toml
@@ -22,7 +22,7 @@ SymbolicWedderburn = "858aa9a9-4c7c-4c62-b466-2421203962a2"
 
 [compat]
 CliqueTrees = "1"
-DataStructures = "0.18"
+DataStructures = "0.18, 0.19"
 JuMP = "1.10"
 MathOptInterface = "1.13"
 MultivariateBases = "0.2"