diff --git a/Cargo.lock b/Cargo.lock
index c0b4f949..031c3b3f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2090,7 +2090,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "undermoon"
-version = "0.4.0-alpha.4"
+version = "0.4.0"
 dependencies = [
  "actix-http 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "actix-rt 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index 0a0c81b8..8d5ef84e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "undermoon"
-version = "0.4.0-alpha.4"
+version = "0.4.0"
 authors = ["doyoubi"]
 edition = "2018"