diff --git a/Project.toml b/Project.toml
index e8b269b..167af03 100644
--- a/Project.toml
+++ b/Project.toml
@@ -11,6 +11,7 @@ OrdinaryDiffEq = "1dea7af3-3e70-54e6-95c3-0bf5283fa5ed"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 
 [compat]
+OrdinaryDiffEq = "5"
 julia = "1"
 
 [extras]