diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3c1d99d83..5607dbf23 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -61,6 +61,7 @@ You should also include the user name that made the change.
 - Server: signToActivityPubGet is set to true by default @syuilo
 - Server: improve syslog performance @syuilo
 - Server: improve note scoring for featured notes @CyberRex0
+- Server: アンケート選択肢の文字数制限を緩和 @syuilo
 - Server: delete outdated notifications regularly to improve db performance @syuilo
 - Server: delete outdated hard-mutes regularly to improve db performance @syuilo
 - Server: delete outdated notes of antenna regularly to improve db performance @syuilo
diff --git a/packages/backend/migration/1673336077243-PollChoiceLength.js b/packages/backend/migration/1673336077243-PollChoiceLength.js
new file mode 100644
index 000000000..810c626e0
--- /dev/null
+++ b/packages/backend/migration/1673336077243-PollChoiceLength.js
@@ -0,0 +1,11 @@
+export class PollChoiceLength1673336077243 {
+    name = 'PollChoiceLength1673336077243'
+
+    async up(queryRunner) {
+				await queryRunner.query(`ALTER TABLE "poll" ALTER COLUMN "choices" TYPE character varying(256) array`);
+    }
+
+    async down(queryRunner) {
+			await queryRunner.query(`ALTER TABLE "poll" ALTER COLUMN "choices" TYPE character varying(128) array`);
+    }
+}
diff --git a/packages/backend/src/models/entities/Poll.ts b/packages/backend/src/models/entities/Poll.ts
index 6641b435e..ee1d64602 100644
--- a/packages/backend/src/models/entities/Poll.ts
+++ b/packages/backend/src/models/entities/Poll.ts
@@ -24,7 +24,7 @@ export class Poll {
 	public multiple: boolean;
 
 	@Column('varchar', {
-		length: 128, array: true, default: '{}',
+		length: 256, array: true, default: '{}',
 	})
 	public choices: string[];