diff --git a/backend-pg/src/server/routes/v1/identity-access-token-router.ts b/backend-pg/src/server/routes/v1/identity-access-token-router.ts
index 82a92c708..b39fe08a2 100644
--- a/backend-pg/src/server/routes/v1/identity-access-token-router.ts
+++ b/backend-pg/src/server/routes/v1/identity-access-token-router.ts
@@ -11,8 +11,8 @@ export const registerIdentityAccessTokenRouter = async (server: FastifyZodProvid
       response: {
         200: z.object({
           accessToken: z.string(),
-          expiresIn: z.number(),
-          accessTokenMaxTTL: z.number(),
+          expiresIn: z.coerce.number(),
+          accessTokenMaxTTL: z.coerce.number(),
           tokenType: z.literal("Bearer")
         })
       }