diff --git a/HISTORY.md b/HISTORY.md
index 52092ca..0b42fc2 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,7 @@
 # History
 ## UNRELEASED
+
+## 4.0.0
 - Update to ReScript 11.
 - Add `Edge` logger.
 - **[BREAKING]** Remove Linux `arm64` binary.
diff --git a/package.json b/package.json
index b4e9adc..296696e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "rescript-logger",
-  "version": "3.1.0",
+  "version": "4.0.0",
   "description": "Logging implementation for ReScript",
   "author": "Alex Fedoseev <alex@35mil.me>",
   "license": "MIT",
diff --git a/rescript-logger-ppx.opam b/rescript-logger-ppx.opam
index f270f4d..a2cabdb 100644
--- a/rescript-logger-ppx.opam
+++ b/rescript-logger-ppx.opam
@@ -1,6 +1,6 @@
 opam-version: "2.0"
 name: "rescript-logger-ppx"
-version: "3.1.0"
+version: "4.0.0"
 synopsis: "Logging implementation for ReScript"
 description: """
 Logging implementation for ReScript