diff --git a/.changeset/blue-flowers-applaud.md b/.changeset/blue-flowers-applaud.md
deleted file mode 100644
index 5ee17e4e..00000000
--- a/.changeset/blue-flowers-applaud.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"ox": minor
----
-
-Updated `Signature.toHex` to serialize the last byte as `v` instead of `yParity` for widened compatibility.
diff --git a/.changeset/metal-drinks-smoke.md b/.changeset/metal-drinks-smoke.md
deleted file mode 100644
index 96892c4d..00000000
--- a/.changeset/metal-drinks-smoke.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"ox": patch
----
-
-Added assertion for ABI-encoding integer ranges.
diff --git a/.changeset/olive-waves-stare.md b/.changeset/olive-waves-stare.md
deleted file mode 100644
index 36a80a82..00000000
--- a/.changeset/olive-waves-stare.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"ox": patch
----
-
-Added support for block identifiers.
diff --git a/src/CHANGELOG.md b/src/CHANGELOG.md
index 28f43154..a0b8b2c7 100644
--- a/src/CHANGELOG.md
+++ b/src/CHANGELOG.md
@@ -1,5 +1,17 @@
 # ox
 
+## 0.4.0
+
+### Minor Changes
+
+- [#35](https://github.com/wevm/ox/pull/35) [`4680b06`](https://github.com/wevm/ox/commit/4680b06d4715b1b62d903f45490d325506a1e959) Thanks [@gregfromstl](https://github.com/gregfromstl)! - Updated `Signature.toHex` to serialize the last byte as `v` instead of `yParity` for widened compatibility.
+
+### Patch Changes
+
+- [`15f9863`](https://github.com/wevm/ox/commit/15f98630c46ec0c09998162a92a5e8bac709e32d) Thanks [@jxom](https://github.com/jxom)! - Added assertion for ABI-encoding integer ranges.
+
+- [`2e0d4af`](https://github.com/wevm/ox/commit/2e0d4af5c6e26c09a9b83971be0fc06415ee4976) Thanks [@jxom](https://github.com/jxom)! - Added support for block identifiers.
+
 ## 0.3.1
 
 ### Patch Changes
diff --git a/src/jsr.json b/src/jsr.json
index 91dc7e61..894a757c 100644
--- a/src/jsr.json
+++ b/src/jsr.json
@@ -1,6 +1,6 @@
 {
   "name": "@wevm/ox",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "publish": {
     "include": ["LICENSE", "README.md", "CHANGELOG.md", "**/*.ts"],
     "exclude": [
diff --git a/src/package.json b/src/package.json
index 513c45bf..8665625b 100644
--- a/src/package.json
+++ b/src/package.json
@@ -1,7 +1,7 @@
 {
   "name": "ox",
   "description": "Ethereum Standard Library",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "type": "module",
   "main": "./_cjs/index.js",
   "module": "./_esm/index.js",
diff --git a/src/version.ts b/src/version.ts
index bc1b65b2..2e790b5f 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1,2 +1,2 @@
 /** @internal */
-export const version = '0.3.1'
+export const version = '0.4.0'