diff --git a/package.json b/package.json
index 44f07e9..ccbc241 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "name": "gunma-univ-gaming-edition",
     "description": "The browser extension of Gunma University Gaming Edition",
     "license": "MIT",
-    "version": "2.1.1",
+    "version": "2.2.1",
     "scripts": {
         "build": "pnpm run build-chrome",
         "build:dev": "pnpm run build-chrome:dev",
diff --git a/public/manifest_chrome.json b/public/manifest_chrome.json
index fc8088d..36e4d07 100644
--- a/public/manifest_chrome.json
+++ b/public/manifest_chrome.json
@@ -1,7 +1,7 @@
 {
     "manifest_version": 3,
     "name": "ゲーミング群馬大学 -Gaming Gunma University-",
-    "version": "2.1.1",
+    "version": "2.2.1",
     "description": "辺境の地にある群馬大学のウェブサイトをゲーミングでエキサイティングにします",
     "author": "shun819.mail@gmail.com",
     "permissions": ["storage", "tabs"],
diff --git a/public/manifest_firefox.json b/public/manifest_firefox.json
index 02149b9..a384da3 100644
--- a/public/manifest_firefox.json
+++ b/public/manifest_firefox.json
@@ -1,7 +1,7 @@
 {
     "manifest_version": 3,
     "name": "ゲーミング群馬大学 -Gaming Gunma University-",
-    "version": "2.1.1",
+    "version": "2.2.1",
     "description": "辺境の地にある群馬大学のウェブサイトをゲーミングでエキサイティングにします",
     "author": "shun819.mail@gmail.com",
     "permissions": ["storage", "tabs"],