diff --git a/test/downstream/Project.toml b/test/downstream/Project.toml
index a50708f8e..128772437 100644
--- a/test/downstream/Project.toml
+++ b/test/downstream/Project.toml
@@ -29,7 +29,7 @@ JumpProcesses = "9.10"
 ModelingToolkit = "8.37, 9"
 ModelingToolkitStandardLibrary = "2.7"
 NonlinearSolve = "2, 3"
-Optimization = "3"
+Optimization = "3, 4"
 OptimizationMOI = "0.4"
 OptimizationOptimJL = "0.1, 0.2, 0.3"
 OrdinaryDiffEq = "6.33"