diff --git a/Cargo.toml b/Cargo.toml
index 8aae28e1..9a044b82 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ license = "Apache-2.0"
 authors = [ "Stephen Demos <stephen.demos@coreos.com>",
             "Luca Bruno <lucab@debian.org>" ]
 description = "A simple cloud provider agent"
-version = "3.1.1-alpha.0"
+version = "4.0.0-alpha.0"
 
 [[bin]]
 name = "afterburn"