diff --git a/docs/Project.toml b/docs/Project.toml
index b431189f9..060076341 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -57,6 +57,7 @@ Manifolds = "0.9"
 Manopt = "0.4"
 ModelingToolkit = "9"
 NLPModels = "0.21"
+NLPModelsTest = "0.10"
 NLopt = "0.6, 1"
 Optimization = "3"
 OptimizationBBO = "0.1, 0.2, 0.3"