diff --git a/CHANGELOG.md b/CHANGELOG.md
index efa0f1c..e984e47 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# `0.4.0`
+
+- Bump biscuit-auth to `3.1.0` (#36) (Clément Delafargue)
+
 # `0.4.0-beta3`
 
 - Add `merge` and `mergeBlock` to `Authorizer` (#35) (Clément Delafargue)
diff --git a/Cargo.lock b/Cargo.lock
index 804c3bf..73ad0b6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -79,7 +79,7 @@ dependencies = [
 
 [[package]]
 name = "biscuit-wasm"
-version = "0.4.0-beta3"
+version = "0.4.0"
 dependencies = [
  "base64",
  "biscuit-auth",
diff --git a/Cargo.toml b/Cargo.toml
index 0212394..d410172 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "biscuit-wasm"
-version = "0.4.0-beta3"
+version = "0.4.0"
 edition = "2021"
 repository = "https://github.com/biscuit-auth/biscuit-wasm"
 description = "WebAssembly wrapper for Biscuit authorization tokens"
diff --git a/package-lock.json b/package-lock.json
index 61d8266..a5b972c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@biscuit-auth/biscuit-wasm",
-  "version": "0.4.0-beta2",
+  "version": "0.4.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@biscuit-auth/biscuit-wasm",
-      "version": "0.4.0-beta2",
+      "version": "0.4.0",
       "license": "Apache-2.0",
       "devDependencies": {
         "prettier": "^2.8.6"
diff --git a/package.json b/package.json
index c961b41..6a51045 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@biscuit-auth/biscuit-wasm",
   "description": "WebAssembly wrapper for Biscuit authorization tokens",
-  "version": "0.4.0-beta3",
+  "version": "0.4.0",
   "license": "Apache-2.0",
   "repository": {
     "type": "git",