diff --git a/Project.toml b/Project.toml
index 6ba52ea..f060455 100644
--- a/Project.toml
+++ b/Project.toml
@@ -12,7 +12,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 UUIDs = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
 
 [compat]
-Compat = "3.33"
+Compat = "3.33, 4"
 julia = "1"
 
 [extras]