1 files changed, 3 insertions, 2 deletions

diff --git a/server/middlewares/async.ts b/server/middlewares/async.ts
index f770bc120..25b22596c 100644
--- a/server/middlewares/async.ts
+++ b/server/middlewares/async.ts
@@ -1,11 +1,12 @@
 import { eachSeries } from 'async'
 import { NextFunction, Request, RequestHandler, Response } from 'express'
 import { retryTransactionWrapper } from '../helpers/database-utils'
+import { ValidationChain } from 'express-validator'
 
 // Syntactic sugar to avoid try/catch in express controllers
 // Thanks: https://medium.com/@Abazhenov/using-async-await-in-express-with-node-8-b8af872c0016
 
-export type RequestPromiseHandler = (req: Request, res: Response, next: NextFunction) => Promise<any>
+export type RequestPromiseHandler = ValidationChain | ((req: Request, res: Response, next: NextFunction) => Promise<any>)
 
 function asyncMiddleware (fun: RequestPromiseHandler | RequestPromiseHandler[]) {
   return (req: Request, res: Response, next: NextFunction) => {
@@ -21,7 +22,7 @@ function asyncMiddleware (fun: RequestPromiseHandler | RequestPromiseHandler[])
   }
 }
 
-function asyncRetryTransactionMiddleware (fun: RequestPromiseHandler) {
+function asyncRetryTransactionMiddleware (fun: (req: Request, res: Response, next: NextFunction) => Promise<any>) {
   return (req: Request, res: Response, next: NextFunction) => {
     return Promise.resolve(
       retryTransactionWrapper(fun, req, res, next)