diff --git a/backend/src/__tests__/setup.ts b/backend/src/__tests__/setup.ts
index cda1c30..3c35ea2 100644
--- a/backend/src/__tests__/setup.ts
+++ b/backend/src/__tests__/setup.ts
@@ -125,7 +125,7 @@ function addIncludes(item: any, include: any): any {
 }
 
 // Build mock Prisma client
-const mockPrismaClient = {
+const mockPrismaClient: any = {
   user: {
     findUnique: jest.fn(async ({ where, include }: any) => {
       const user = findInArray(mockUsers, where);
@@ -280,7 +280,7 @@ const mockPrismaClient = {
       return cat;
     }),
   },
-  $transaction: jest.fn(async (operations: any) => {
+  $transaction: jest.fn(async (operations: any): Promise<any> => {
     if (Array.isArray(operations)) {
       return Promise.all(operations);
     }