diff --git a/Project.toml b/Project.toml
index d9c3d9c..77aa3e9 100644
--- a/Project.toml
+++ b/Project.toml
@@ -27,7 +27,7 @@ GlobalSensitivity = "2"
 LinearAlgebra = "1"
 ModelingToolkit = "9.12"
 NLopt = "0.6, 1"
-Optimization = "3"
+Optimization = "3, 4"
 OptimizationBBO = "0.2, 0.3"
 OptimizationNLopt = "0.2"
 Plots = "1"