diff --git a/docs/Project.toml b/docs/Project.toml
index 21d238294..f505b7b77 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -68,7 +68,7 @@ NLPModelsTest = "0.10"
 NLopt = "0.6, 1"
 Optimization = "4, 5"
 OptimizationBBO = "0.4"
-OptimizationBase = "2, 3"
+OptimizationBase = "2, 3, 4"
 OptimizationCMAEvolutionStrategy = "0.3"
 OptimizationEvolutionary = "0.4"
 OptimizationGCMAES = "0.3"