diff --git a/Project.toml b/Project.toml
index 299a03b2..7e3d7796 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,7 +19,7 @@ SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 SymbolicWedderburn = "858aa9a9-4c7c-4c62-b466-2421203962a2"
 
 [compat]
-DataStructures = "0.18"
+DataStructures = "0.18, 0.19"
 JuMP = "1.10"
 MathOptInterface = "1.13"
 MultivariateBases = "0.2"