diff --git a/packages/core/src/api/guild.ts b/packages/core/src/api/guild.ts
index 6eb7a5bd3..81aae5e1b 100644
--- a/packages/core/src/api/guild.ts
+++ b/packages/core/src/api/guild.ts
@@ -102,7 +102,7 @@ export class GuildsAPI {
 	 * @param guildId - The id of the guild
 	 * @param options - The options for fetching the guild
 	 */
-	public async get(guildId: string, { signal }: Pick<RequestData, 'signal'> = {}) {
+	public async get(guildId: Snowflake, { signal }: Pick<RequestData, 'signal'> = {}) {
 		return this.rest.get(Routes.guild(guildId), { signal }) as Promise<RESTGetAPIGuildResult>;
 	}
 
diff --git a/packages/core/src/api/webhook.ts b/packages/core/src/api/webhook.ts
index 288c56a51..2b8ed3e4e 100644
--- a/packages/core/src/api/webhook.ts
+++ b/packages/core/src/api/webhook.ts
@@ -272,7 +272,7 @@ export class WebhooksAPI {
 		id: Snowflake,
 		token: string,
 		messageId: Snowflake,
-		query: { thread_id?: string } = {},
+		query: { thread_id?: Snowflake } = {},
 		{ signal }: Pick<RequestData, 'signal'> = {},
 	) {
 		await this.rest.delete(Routes.webhookMessage(id, token, messageId), {