diff --git a/CHANGELOG.md b/CHANGELOG.md
index 855e3852..bf1355a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## [Unreleased]
 
+## v0.9.0 - 2019-05-06
+
 ### Breaking
 
 - Marp Core requires Node >= 8.
diff --git a/package.json b/package.json
index e43eb48c..f37a2236 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@marp-team/marp-core",
-  "version": "0.8.0",
+  "version": "0.9.0",
   "description": "The core of Marp tools",
   "license": "MIT",
   "author": {