diff --git a/Project.toml b/Project.toml
index 827e684..bcc9182 100644
--- a/Project.toml
+++ b/Project.toml
@@ -15,7 +15,7 @@ Sobol = "ed01d8cd-4d21-5b2a-85b4-cc3bdc58bad4"
 
 [compat]
 ChainRulesCore = "0.10, 1"
-Hyperopt = "0.4"
+Hyperopt = "0.4, 0.5"
 NonconvexCore = "0.1.4"
 Parameters = "0.12"
 Reexport = "1"