diff --git a/Project.toml b/Project.toml
index f74d958..0a91574 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "Crayons"
 uuid = "a8cc5b0e-0ffa-5ad4-8c14-923d3ee1735f"
-version = "3.0.0"
+version = "4.0.0"
 
 [compat]
 julia = "1.0"