diff --git a/CHANGELOG.md b/CHANGELOG.md
index d79fb3e..b0734e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## Unreleased
+## 0.4.0
 
 ### Breaking changes
 
diff --git a/Cargo.toml b/Cargo.toml
index f76c23d..0981ad0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "aarch64-paging"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 description = "A library to manipulate AArch64 VMSA EL1 page tables."