diff --git a/.github/ISSUE_TEMPLATE.md b/.github/ISSUE_TEMPLATE.md
index 56653ae7ca3..913759bc64b 100644
--- a/.github/ISSUE_TEMPLATE.md
+++ b/.github/ISSUE_TEMPLATE.md
@@ -22,3 +22,6 @@
 
 ## 関連情報 (Ref)
 
+
+## 脆弱性報告 (Vulnerability report)
+脆弱性のご報告は弊社[問い合わせフォーム](https://www.ec-cube.net/contact/)からお願いします。
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 6575fd4464b..192fdd8c4a1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "eccube",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 62d106e2488..f31989517db 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "eccube",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "EC-CUBE EC open platform.",
   "main": "index.js",
   "directories": {
diff --git a/src/Eccube/Common/Constant.php b/src/Eccube/Common/Constant.php
index 0eae7045b06..7f5be43a756 100644
--- a/src/Eccube/Common/Constant.php
+++ b/src/Eccube/Common/Constant.php
@@ -18,7 +18,7 @@ class Constant
     /**
      * EC-CUBE VERSION.
      */
-    public const VERSION = '4.2.0';
+    public const VERSION = '4.2.1';
 
     /**
      * Enable value.