diff --git a/CHANGELOG.md b/CHANGELOG.md
index 643629b..735620d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# Version 0.4.0
+
+- Add `process`, `fs`, `net`, `lock`, `channel` modules.
+- Update all dependencies
+- Remove `smol::run()`.
+
 # Version 0.3.3
 
 - Add `block_on()`.
diff --git a/Cargo.toml b/Cargo.toml
index db79616..511d620 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "smol"
-version = "0.3.3"
+version = "0.4.0"
 authors = ["Stjepan Glavina <stjepang@gmail.com>"]
 edition = "2018"
 description = "A small and fast async runtime"