diff --git a/deno/rest/v10/stageInstance.ts b/deno/rest/v10/stageInstance.ts
index 7929dd40..f2fcf104 100644
--- a/deno/rest/v10/stageInstance.ts
+++ b/deno/rest/v10/stageInstance.ts
@@ -20,6 +20,10 @@ export interface RESTPostAPIStageInstanceJSONBody {
 	 * @default GuildOnly
 	 */
 	privacy_level?: StageInstancePrivacyLevel;
+	/**
+	 * Notify @everyone that a stage instance has started
+	 */
+	send_start_notification?: boolean;
 }
 
 /**
diff --git a/deno/rest/v9/stageInstance.ts b/deno/rest/v9/stageInstance.ts
index 56295efd..1dc4e5ec 100644
--- a/deno/rest/v9/stageInstance.ts
+++ b/deno/rest/v9/stageInstance.ts
@@ -20,6 +20,10 @@ export interface RESTPostAPIStageInstanceJSONBody {
 	 * @default GuildOnly
 	 */
 	privacy_level?: StageInstancePrivacyLevel;
+	/**
+	 * Notify @everyone that a stage instance has started
+	 */
+	send_start_notification?: boolean;
 }
 
 /**
diff --git a/rest/v10/stageInstance.ts b/rest/v10/stageInstance.ts
index bcc405d7..c72056b6 100644
--- a/rest/v10/stageInstance.ts
+++ b/rest/v10/stageInstance.ts
@@ -20,6 +20,10 @@ export interface RESTPostAPIStageInstanceJSONBody {
 	 * @default GuildOnly
 	 */
 	privacy_level?: StageInstancePrivacyLevel;
+	/**
+	 * Notify @everyone that a stage instance has started
+	 */
+	send_start_notification?: boolean;
 }
 
 /**
diff --git a/rest/v9/stageInstance.ts b/rest/v9/stageInstance.ts
index 6b7dd0d8..02f0a3d3 100644
--- a/rest/v9/stageInstance.ts
+++ b/rest/v9/stageInstance.ts
@@ -20,6 +20,10 @@ export interface RESTPostAPIStageInstanceJSONBody {
 	 * @default GuildOnly
 	 */
 	privacy_level?: StageInstancePrivacyLevel;
+	/**
+	 * Notify @everyone that a stage instance has started
+	 */
+	send_start_notification?: boolean;
 }
 
 /**