diff --git a/docs/Project.toml b/docs/Project.toml
index 304299ff3..617c85a1c 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -62,7 +62,7 @@ JLD2 = "0.4, 0.5.1"
 ModelingToolkit = "9"
 ODEProblemLibrary = "0.1"
 Optimization = "3"
-OptimizationNLopt = "0.2"
+OptimizationNLopt = "0.2, 0.3"
 OrdinaryDiffEq = "6.76"
 OrdinaryDiffEqCore = "1"
 Plots = "1"