diff --git a/test/downstream/Project.toml b/test/downstream/Project.toml
index a50708f8e..5ccbb4432 100644
--- a/test/downstream/Project.toml
+++ b/test/downstream/Project.toml
@@ -28,7 +28,7 @@ ForwardDiff = "0.10"
 JumpProcesses = "9.10"
 ModelingToolkit = "8.37, 9"
 ModelingToolkitStandardLibrary = "2.7"
-NonlinearSolve = "2, 3"
+NonlinearSolve = "2, 3, 4"
 Optimization = "3"
 OptimizationMOI = "0.4"
 OptimizationOptimJL = "0.1, 0.2, 0.3"