diff --git a/test/Project.toml b/test/Project.toml
index 7e3a319..840df71 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -5,4 +5,4 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [compat]
 Aqua = "0.8"
-LazySets = "1, 2, 3"
+LazySets = "1, 2, 3, 4"