diff --git a/.changeset/twelve-flowers-tease.md b/.changeset/twelve-flowers-tease.md
new file mode 100644
index 00000000..9f257827
--- /dev/null
+++ b/.changeset/twelve-flowers-tease.md
@@ -0,0 +1,5 @@
+---
+"guilded.js": patch
+---
+
+Added 'reason' property to ban manager
diff --git a/bun.lockb b/bun.lockb
index 8f7b1c96..f91cde19 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/packages/guilded.js/lib/managers/global/GuildBanManager.ts b/packages/guilded.js/lib/managers/global/GuildBanManager.ts
index 6060a65a..47a3130a 100644
--- a/packages/guilded.js/lib/managers/global/GuildBanManager.ts
+++ b/packages/guilded.js/lib/managers/global/GuildBanManager.ts
@@ -70,10 +70,13 @@ export class GlobalGuildBanManager extends CacheableStructManager<string, Member
 	 * @param userId The ID of the user.
 	 * @returns A Promise that resolves with the newly created member ban.
 	 */
-	async ban(serverId: string, userId: string): Promise<MemberBan> {
+	async ban(serverId: string, userId: string, reason?: string): Promise<MemberBan> {
 		const data = await this.client.rest.router.memberBans.serverMemberBanCreate({
 			serverId,
 			userId,
+			requestBody: {
+				reason,
+			},
 		});
 		const newMemberBan = new MemberBan(this.client, {
 			serverId,