diff --git a/Project.toml b/Project.toml
index 7683e75..6c1d586 100644
--- a/Project.toml
+++ b/Project.toml
@@ -9,7 +9,7 @@ SolverCore = "ff4d7338-4cf1-434d-91df-b86cb86fb843"
 
 [compat]
 Ipopt = "0.5.0, 0.6, 0.7"
-NLPModels = "0.14, 0.15, 0.16, 0.17"
+NLPModels = "0.14, 0.15, 0.16, 0.17, 0.18"
 SolverCore = "0.1, 0.2"
 julia = "^1.3.0"