diff --git a/wally.toml b/wally.toml
index e20bfd8..c9f012d 100644
--- a/wally.toml
+++ b/wally.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ukendio/jecs"
-version = "0.3.2"
+version = "0.4.0-rc.0"
 registry = "https://github.com/UpliftGames/wally-index"
 realm = "shared"
 license = "MIT"