diff --git a/Cargo.lock b/Cargo.lock
index faabfed8..164c190d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5,7 +5,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "afterburn"
-version = "3.1.1-alpha.0"
+version = "4.0.0"
 dependencies = [
  "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index 9a044b82..3ebfe1e3 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 = "4.0.0-alpha.0"
+version = "4.0.0"
 
 [[bin]]
 name = "afterburn"