diff --git a/src/lib/events/index.ts b/src/lib/events/index.ts
index 339de186b3..a2c10ed701 100644
--- a/src/lib/events/index.ts
+++ b/src/lib/events/index.ts
@@ -210,6 +210,8 @@ export const MILESTONE_PROGRESSION_UPDATED =
     'milestone-progression-updated' as const;
 export const MILESTONE_PROGRESSION_DELETED =
     'milestone-progression-deleted' as const;
+export const MILESTONE_PROGRESSION_CHANGED =
+    'milestone-progression-changed' as const;
 
 export const RELEASE_PLAN_ADDED = 'release-plan-added' as const;
 export const RELEASE_PLAN_REMOVED = 'release-plan-removed' as const;
@@ -384,6 +386,7 @@ export const IEventTypes = [
     MILESTONE_PROGRESSION_CREATED,
     MILESTONE_PROGRESSION_UPDATED,
     MILESTONE_PROGRESSION_DELETED,
+    MILESTONE_PROGRESSION_CHANGED,
     USER_PREFERENCE_UPDATED,
     SCIM_USERS_DELETED,
     SCIM_GROUPS_DELETED,
diff --git a/src/lib/types/events.ts b/src/lib/types/events.ts
index 7344d92880..9abd82c650 100644
--- a/src/lib/types/events.ts
+++ b/src/lib/types/events.ts
@@ -124,6 +124,7 @@ import {
     MILESTONE_PROGRESSION_CREATED,
     MILESTONE_PROGRESSION_UPDATED,
     MILESTONE_PROGRESSION_DELETED,
+    MILESTONE_PROGRESSION_CHANGED,
 } from '../events/index.js';
 import type { ITag } from '../tags/index.js';
 import type { IClientApplication } from './stores/client-applications-store.js';
@@ -1872,6 +1873,29 @@ export class MilestoneProgressionDeletedEvent extends BaseEvent {
     }
 }
 
+export class MilestoneProgressionChangedEvent extends BaseEvent {
+    readonly project: string;
+    readonly environment: string;
+    readonly featureName: string;
+    readonly preData: any;
+    readonly data: any;
+    constructor(eventData: {
+        project: string;
+        environment: string;
+        featureName: string;
+        data: any;
+        preData?: any;
+        auditUser: IAuditUser;
+    }) {
+        super(MILESTONE_PROGRESSION_CHANGED, eventData.auditUser);
+        this.project = eventData.project;
+        this.environment = eventData.environment;
+        this.featureName = eventData.featureName;
+        this.data = eventData.data;
+        this.preData = eventData.preData;
+    }
+}
+
 export class ReleasePlanTemplateCreatedEvent extends BaseEvent {
     readonly data: any;
     constructor(eventData: {