diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9df368f..b449c81 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# 0.4.0
+
+* Return error if authorization is required but credentials are not present (#24)
+
+* Upgrade tokio to 0.3 (#27)
+
 # 0.3.0
 
 * Allow to take arbitrary socket instead of address to establish connections to proxy (#20)
diff --git a/Cargo.toml b/Cargo.toml
index 4c043e6..7cb3a64 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,7 @@ readme = "README.md"
 categories = ["asynchronous", "network-programming"]
 keywords = ["tokio", "async", "proxy", "socks", "socks5"]
 license = "MIT"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["Yilin Chen <sticnarf@gmail.com>"]
 edition = "2018"