diff --git a/docs/Project.toml b/docs/Project.toml
index 044a380b59..f2312eae69 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -78,7 +78,7 @@ ModelingToolkit = "9.9"
 MultiDocumenter = "0.7"
 NeuralPDE = "5.15"
 NonlinearSolve = "3"
-Optimization = "3"
+Optimization = "3, 4"
 OptimizationMOI = "0.4"
 OptimizationNLopt = "0.2"
 OptimizationOptimJL = "0.2, 0.3"