diff --git a/Project.toml b/Project.toml
index 564adf4..f6add0a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -16,7 +16,7 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 DiffEqBase = "6"
 DiffEqBiological = "4.0"
 DiffEqOperators = "4"
-ModelingToolkit = "0.9, 0.10, 1.0"
+ModelingToolkit = "0.9, 0.10, 1.0, 2.0"
 julia = "1"
 
 [extras]