diff --git a/Project.toml b/Project.toml
index 2a87a8b9..ff7df675 100644
--- a/Project.toml
+++ b/Project.toml
@@ -20,7 +20,7 @@ TestItems = "1c621080-faea-4a02-84b6-bbd5e436b8fe"
 TrajectoryIndexingUtils = "6dad8b7f-dd9a-4c28-9b70-85b9a079bfc8"
 
 [compat]
-DirectTrajOpt = "0.4"
+DirectTrajOpt = "0.4, 0.5"
 Distributions = "0.25"
 ExponentialAction = "0.2"
 JLD2 = "0.5"