diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e36d3ca..63c723f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## [Unreleased]
 
+## v0.3.1 - 2018-11-24
+
 ### Security
 
 - Upgrade dependent packages to prevent the malicious attack in dependencies ([#96](https://github.com/marp-team/marpit/pull/96))
diff --git a/package.json b/package.json
index 825a6dfb..2862816c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@marp-team/marpit",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "The skinny framework for creating slide deck from Markdown",
   "license": "MIT",
   "author": {