diff --git a/Project.toml b/Project.toml
index 03a7e6f..9167267 100644
--- a/Project.toml
+++ b/Project.toml
@@ -8,7 +8,7 @@ Lazy = "50d2b5c4-7a5e-59d5-8109-a42b560f39c0"
 
 [compat]
 julia = "0.7, 1"
-Compat = "1, 2, 3"
+Compat = "1, 2, 3, 4"
 Lazy = "0.13, 0.14, 0.15"
 
 [extras]