diff --git a/apps/stock/data-ingestion/src/handlers/qm/shared/session-manager.ts b/apps/stock/data-ingestion/src/handlers/qm/shared/session-manager.ts
index acfca30..e9d9238 100644
--- a/apps/stock/data-ingestion/src/handlers/qm/shared/session-manager.ts
+++ b/apps/stock/data-ingestion/src/handlers/qm/shared/session-manager.ts
@@ -132,7 +132,7 @@ export class QMSessionManager {
         createdAt: session.createdAt instanceof Date ? session.createdAt.toISOString() : session.createdAt,
         id: session.uuid,
         sessionType,
-      } as any;
+      };
 
       await this.cacheProvider.set(sessionKey, cachedSession, 86400); // 24 hour TTL
 
@@ -261,8 +261,20 @@ export class QMSessionManager {
   /**
    * Get statistics about sessions
    */
-  async getStats(): Promise<Record<string, any>> {
-    const stats: Record<string, any> = {};
+  async getStats(): Promise<Record<string, {
+    total: number;
+    valid: number;
+    failed: number;
+    successfulCalls: number;
+    failedCalls: number;
+  }>> {
+    const stats: Record<string, {
+      total: number;
+      valid: number;
+      failed: number;
+      successfulCalls: number;
+      failedCalls: number;
+    }> = {};
     
     for (const [sessionType, sessionId] of Object.entries(QM_SESSION_IDS)) {
       const sessions = await this.getSessions(sessionId);
diff --git a/apps/stock/data-ingestion/src/handlers/qm/shared/types.ts b/apps/stock/data-ingestion/src/handlers/qm/shared/types.ts
index 7848f39..d1ee6e6 100644
--- a/apps/stock/data-ingestion/src/handlers/qm/shared/types.ts
+++ b/apps/stock/data-ingestion/src/handlers/qm/shared/types.ts
@@ -3,7 +3,7 @@
  */
 
 export interface QMSession {
-  uuid?: string; // Unique identifier for the session
+  uuid: string; // Unique identifier for the session
   proxy: string;
   headers: HeadersInit;
   successfulCalls: number;
@@ -46,7 +46,14 @@ export interface QMAuthResponse {
   error?: string;
 }
 
-export interface CachedSession extends QMSession {
+export interface CachedSession {
+  uuid: string;
+  proxy: string;
+  headers: HeadersInit;
+  successfulCalls: number;
+  failedCalls: number;
+  lastUsed: string; // ISO string for Redis storage
+  createdAt: string; // ISO string for Redis storage
   id: string;
   sessionType: string;
 }