diff --git a/Project.toml b/Project.toml
index e61ddfd47..da7aee3af 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,7 +19,7 @@ DataInterpolations = "4"
 DiffEqBase = "6.103"
 IfElse = "0.1"
 LinearAlgebra = "1.10"
-ModelingToolkit = "8.69"
+ModelingToolkit = "8.69, 9"
 OrdinaryDiffEq = "6.33"
 SafeTestsets = "0.1"
 Symbolics = "5.2"