diff --git a/Project.toml b/Project.toml
index d60fa60..96d451d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -120,7 +120,7 @@ Colors = "0.12"
 DataDrivenDiffEq = "1"
 DataFrames = "1.4"
 DataInterpolations = "3.0, 4"
-DataStructures = "0.18"
+DataStructures = "0.18, 0.19"
 DiffEqBase = "= 6.120.0"
 DiffResults = "1.0"
 DifferentialEquations = "7"