diff --git a/Project.toml b/Project.toml
index 75c5355..52ffdfb 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,7 +19,7 @@ RecipesBase = "3cdcf5f2-1ef4-517c-9805-6587b60abb01"
 [compat]
 Calculus = "0.5.1"
 ForwardDiff = "0.10"
-NLopt = "0.6, 1.0.0 - 1.0.1, =1.1.1"
+NLopt = "0.6, 1.0.0 - 1.0.1, =1.0.3"
 PlotUtils = "1.4"
 ProgressMeter = "1.10"
 RecipesBase = "1.1"