diff --git a/test/downstream/Project.toml b/test/downstream/Project.toml
index 5740bc9a7..c3a0b0a31 100644
--- a/test/downstream/Project.toml
+++ b/test/downstream/Project.toml
@@ -37,6 +37,7 @@ ModelingToolkit = "9.52"
 ModelingToolkitStandardLibrary = "2.7"
 NonlinearSolve = "2, 3, 4"
 Optimization = "4"
+OptimizationMOI = "0.5"
 OrdinaryDiffEq = "6.33"
 Plots = "1.40"
 RecursiveArrayTools = "3"