diff --git a/locales/en-US.yml b/locales/en-US.yml
index 1fc6fea3a..5465a3aad 100644
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@@ -2243,6 +2243,7 @@ _permissions:
   "read:clip-favorite": "View favorited clips"
   "read:federation": "Get federation data"
   "write:report-abuse": "Report violation"
+  "write:push-notification": "Receive push notifications"
 _auth:
   shareAccessTitle: "Granting application permissions"
   shareAccess: "Would you like to authorize \"{name}\" to access this account?"
diff --git a/locales/index.js b/locales/index.js
index 0770fd82a..1eeb2eaf3 100644
--- a/locales/index.js
+++ b/locales/index.js
@@ -72,7 +72,7 @@ export function build() {
 		.reduce((a, [k, v]) => (a[k] = (() => {
 			const [lang] = k.split('-');
 			switch (k) {
-				case 'ja-JP': return v;
+				case 'ja-JP': return merge(locales['en-US'], v);
 				case 'ja-KS':
 				case 'en-US': return merge(locales['ja-JP'], v);
 				default: return merge(
diff --git a/packages/backend/src/misc/mastodon/mastodon-to-misskey-scopes.ts b/packages/backend/src/misc/mastodon/mastodon-to-misskey-scopes.ts
index 531a9bc6c..046fc8738 100644
--- a/packages/backend/src/misc/mastodon/mastodon-to-misskey-scopes.ts
+++ b/packages/backend/src/misc/mastodon/mastodon-to-misskey-scopes.ts
@@ -3,6 +3,7 @@ import { permissions } from 'misskey-js';
 const mastodonToMisskeyScopes: Map<string, (typeof permissions)[number][]> = new Map([
 	['profile', ['read:account']],
 	['follow', ['read:following', 'write:following', 'read:blocks', 'write:blocks', 'read:mutes', 'write:mutes']],
+	['push', ['write:push-notification']],
 	['read:accounts', ['read:account']],
 	['read:blocks', ['read:blocks']],
 	['read:bookmarks', ['read:favorites']],
diff --git a/packages/misskey-js/etc/misskey-js.api.md b/packages/misskey-js/etc/misskey-js.api.md
index 94b056fa3..9f7e34fa2 100644
--- a/packages/misskey-js/etc/misskey-js.api.md
+++ b/packages/misskey-js/etc/misskey-js.api.md
@@ -2820,7 +2820,7 @@ type PagesUpdateRequest = operations['pages___update']['requestBody']['content']
 function parse(acct: string): Acct;
 
 // @public (undocumented)
-export const permissions: readonly ["read:account", "write:account", "read:blocks", "write:blocks", "read:drive", "write:drive", "read:favorites", "write:favorites", "read:following", "write:following", "read:messaging", "write:messaging", "read:mutes", "write:mutes", "write:notes", "read:notifications", "write:notifications", "read:reactions", "write:reactions", "write:votes", "read:pages", "write:pages", "write:page-likes", "read:page-likes", "read:user-groups", "write:user-groups", "read:channels", "write:channels", "read:gallery", "write:gallery", "read:gallery-likes", "write:gallery-likes", "read:flash", "write:flash", "read:flash-likes", "write:flash-likes", "read:admin:abuse-user-reports", "read:admin:abuse-report-resolvers", "write:admin:abuse-report-resolvers", "read:admin:index-stats", "read:admin:table-stats", "read:admin:user-ips", "read:admin:meta", "write:admin:reset-password", "write:admin:regenerate-user-token", "write:admin:resolve-abuse-user-report", "write:admin:send-email", "read:admin:server-info", "read:admin:show-moderation-log", "read:admin:show-account-move-log", "read:admin:show-user", "read:admin:show-users", "write:admin:suspend-user", "write:admin:approve-user", "write:admin:decline-user", "write:admin:unsuspend-user", "write:admin:meta", "write:admin:user-name", "write:admin:user-note", "write:admin:user-avatar", "write:admin:user-banner", "write:admin:user-mutual-link", "write:admin:roles", "read:admin:roles", "write:admin:relays", "read:admin:relays", "write:admin:invite-codes", "read:admin:invite-codes", "write:admin:announcements", "read:admin:announcements", "write:admin:avatar-decorations", "read:admin:avatar-decorations", "write:admin:federation", "write:admin:indie-auth", "read:admin:indie-auth", "write:admin:account", "read:admin:account", "write:admin:emoji", "read:admin:emoji", "write:admin:queue", "read:admin:queue", "write:admin:promo", "write:admin:drive", "read:admin:drive", "write:admin:sso", "read:admin:sso", "write:admin:ad", "read:admin:ad", "write:invite-codes", "read:invite-codes", "write:clip-favorite", "read:clip-favorite", "read:federation", "write:report-abuse"];
+export const permissions: readonly ["read:account", "write:account", "read:blocks", "write:blocks", "read:drive", "write:drive", "read:favorites", "write:favorites", "read:following", "write:following", "read:messaging", "write:messaging", "read:mutes", "write:mutes", "write:notes", "read:notifications", "write:notifications", "read:reactions", "write:reactions", "write:votes", "read:pages", "write:pages", "write:page-likes", "read:page-likes", "read:user-groups", "write:user-groups", "read:channels", "write:channels", "read:gallery", "write:gallery", "read:gallery-likes", "write:gallery-likes", "read:flash", "write:flash", "read:flash-likes", "write:flash-likes", "read:admin:abuse-user-reports", "read:admin:abuse-report-resolvers", "write:admin:abuse-report-resolvers", "read:admin:index-stats", "read:admin:table-stats", "read:admin:user-ips", "read:admin:meta", "write:admin:reset-password", "write:admin:regenerate-user-token", "write:admin:resolve-abuse-user-report", "write:admin:send-email", "read:admin:server-info", "read:admin:show-moderation-log", "read:admin:show-account-move-log", "read:admin:show-user", "read:admin:show-users", "write:admin:suspend-user", "write:admin:approve-user", "write:admin:decline-user", "write:admin:unsuspend-user", "write:admin:meta", "write:admin:user-name", "write:admin:user-note", "write:admin:user-avatar", "write:admin:user-banner", "write:admin:user-mutual-link", "write:admin:roles", "read:admin:roles", "write:admin:relays", "read:admin:relays", "write:admin:invite-codes", "read:admin:invite-codes", "write:admin:announcements", "read:admin:announcements", "write:admin:avatar-decorations", "read:admin:avatar-decorations", "write:admin:federation", "write:admin:indie-auth", "read:admin:indie-auth", "write:admin:account", "read:admin:account", "write:admin:emoji", "read:admin:emoji", "write:admin:queue", "read:admin:queue", "write:admin:promo", "write:admin:drive", "read:admin:drive", "write:admin:sso", "read:admin:sso", "write:admin:ad", "read:admin:ad", "write:invite-codes", "read:invite-codes", "write:clip-favorite", "read:clip-favorite", "read:federation", "write:report-abuse", "write:push-notification"];
 
 // @public (undocumented)
 type PingResponse = operations['ping']['responses']['200']['content']['application/json'];
diff --git a/packages/misskey-js/src/consts.ts b/packages/misskey-js/src/consts.ts
index 470490c15..f3c7dfb79 100644
--- a/packages/misskey-js/src/consts.ts
+++ b/packages/misskey-js/src/consts.ts
@@ -103,6 +103,7 @@ export const permissions = [
 	'read:clip-favorite',
 	'read:federation',
 	'write:report-abuse',
+	'write:push-notification', // Mastodon permission
 ] as const;
 
 export const moderationLogTypes = [