diff --git a/Project.toml b/Project.toml
index 6b0d87ab..9165d007 100644
--- a/Project.toml
+++ b/Project.toml
@@ -21,8 +21,8 @@ DataInterpolations = "8"
 DiffEqBase = "6.190, 7"
 ForwardDiff = "0.10, 1"
 LinearAlgebra = "1.10"
-ModelingToolkit = "11"
-ModelingToolkitBase = "1.1"
+ModelingToolkit = "11.28"
+ModelingToolkitBase = "1.49"
 OrdinaryDiffEq = "6, 7"
 OrdinaryDiffEqBDF = "1, 2"
 OrdinaryDiffEqDefault = "1, 2"