diff --git a/test/downstream/Project.toml b/test/downstream/Project.toml
index b4adf6b1c..3f34e8799 100644
--- a/test/downstream/Project.toml
+++ b/test/downstream/Project.toml
@@ -36,7 +36,7 @@ DelayDiffEq = "5"
 DiffEqCallbacks = "3, 4"
 ForwardDiff = "0.10"
 JumpProcesses = "9.10"
-ModelingToolkit = "9.64.3"
+ModelingToolkit = "9.64.3, 10"
 ModelingToolkitStandardLibrary = "2.7"
 NonlinearSolve = "2, 3, 4"
 Optimization = "4"