diff --git a/test/Project.toml b/test/Project.toml
index 754e655..1abd142 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -10,3 +10,6 @@ Parameters = "d96e819e-fc66-5662-9728-84c9c7592b0a"
 Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[compat]
+ModelingToolkit = "8"