diff --git a/Project.toml b/Project.toml
index d53618a..69fcdf4 100644
--- a/Project.toml
+++ b/Project.toml
@@ -13,7 +13,7 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 [compat]
 ConstraintDomains = "0.1"
 Dictionaries = "0.3"
-Evolutionary = "0.7"
+Evolutionary = "0.7, 0.8"
 OrderedCollections = "1.3"
 julia = "1.5, 1.6"