diff --git a/package.json b/package.json
index fde0f82802..8562e6f6c4 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,8 @@
 {
 	"name": "misskey",
 	"author": "syuilo <i@syuilo.com>",
-	"version": "8.12.0",
-	"clientVersion": "1.0.8981",
+	"version": "8.13.0",
+	"clientVersion": "1.0.9001",
 	"codename": "nighthike",
 	"main": "./built/index.js",
 	"private": true,
@@ -194,7 +194,7 @@
 		"stylus": "0.54.5",
 		"stylus-loader": "3.0.2",
 		"summaly": "2.1.4",
-		"systeminformation": "3.42.9",
+		"systeminformation": "3.43.0",
 		"syuilo-password-strength": "0.0.1",
 		"textarea-caret": "3.1.0",
 		"tmp": "0.0.33",
diff --git a/src/client/app/boot.js b/src/client/app/boot.js
index 86d48faf1a..54397c98c6 100644
--- a/src/client/app/boot.js
+++ b/src/client/app/boot.js
@@ -51,8 +51,9 @@
 		}
 	}
 
-	if (settings) {
-		if (settings.device.lang) lang = settings.device.lang;
+	if (settings && settings.device.lang &&
+		LANGS.includes(settings.device.lang)) {
+		lang = settings.device.lang;
 	}
 	//#endregion
 
diff --git a/src/client/app/desktop/views/components/charts.vue b/src/client/app/desktop/views/components/charts.vue
index 37d95577cd..e400aebbb7 100644
--- a/src/client/app/desktop/views/components/charts.vue
+++ b/src/client/app/desktop/views/components/charts.vue
@@ -394,7 +394,7 @@ export default Vue.extend({
 					yAxes: [{
 						ticks: {
 							callback: value => {
-								return Vue.filter('bytes')(value);
+								return Vue.filter('bytes')(value, 1);
 							}
 						}
 					}]
@@ -403,7 +403,7 @@ export default Vue.extend({
 					callbacks: {
 						label: (tooltipItem, data) => {
 							const label = data.datasets[tooltipItem.datasetIndex].label || '';
-							return `${label}: ${Vue.filter('bytes')(tooltipItem.yLabel)}`;
+							return `${label}: ${Vue.filter('bytes')(tooltipItem.yLabel, 1)}`;
 						}
 					}
 				}
diff --git a/src/remote/activitypub/models/person.ts b/src/remote/activitypub/models/person.ts
index 61bcf77c43..4a7b505a9f 100644
--- a/src/remote/activitypub/models/person.ts
+++ b/src/remote/activitypub/models/person.ts
@@ -166,8 +166,8 @@ export async function createPerson(value: any, resolver?: Resolver): Promise<IUs
 
 	const avatarId = avatar ? avatar._id : null;
 	const bannerId = banner ? banner._id : null;
-	const avatarUrl = avatar && avatar.metadata.url ? avatar.metadata.url : null;
-	const bannerUrl = banner && banner.metadata.url ? banner.metadata.url : null;
+	const avatarUrl = (avatar && avatar.metadata.thumbnailUrl) ? avatar.metadata.thumbnailUrl : (avatar && avatar.metadata.url) ? avatar.metadata.url : null;
+	const bannerUrl = (banner && banner.metadata.url) ? banner.metadata.url : null;
 
 	await User.update({ _id: user._id }, {
 		$set: {
@@ -255,7 +255,7 @@ export async function updatePerson(value: string | IObject, resolver?: Resolver)
 			sharedInbox: person.sharedInbox,
 			avatarId: avatar ? avatar._id : null,
 			bannerId: banner ? banner._id : null,
-			avatarUrl: avatar && avatar.metadata.url ? avatar.metadata.url : null,
+			avatarUrl: (avatar && avatar.metadata.thumbnailUrl) ? avatar.metadata.thumbnailUrl : (avatar && avatar.metadata.url) ? avatar.metadata.url : null,
 			bannerUrl: banner && banner.metadata.url ? banner.metadata.url : null,
 			description: htmlToMFM(person.summary),
 			followersCount,
diff --git a/src/server/api/endpoints/i/update.ts b/src/server/api/endpoints/i/update.ts
index 922b396797..61a6b20c7c 100644
--- a/src/server/api/endpoints/i/update.ts
+++ b/src/server/api/endpoints/i/update.ts
@@ -84,7 +84,7 @@ export default async (params: any, user: ILocalUser, app: IApp) => new Promise(a
 
 		if (avatar == null) return rej('avatar not found');
 
-		updates.avatarUrl = avatar.metadata.url || `${config.drive_url}/${avatar._id}`;
+		updates.avatarUrl = avatar.metadata.thumbnailUrl || avatar.metadata.url || `${config.drive_url}/${avatar._id}`;
 
 		if (avatar.metadata.properties.avgColor) {
 			updates.avatarColor = avatar.metadata.properties.avgColor;