diff --git a/src/middleware.js b/src/middleware.js
index 5a12f889..8cff406d 100644
--- a/src/middleware.js
+++ b/src/middleware.js
@@ -38,7 +38,7 @@ app.use(
   }),
 );
 
-app.use(express.json());
+app.use(express.json({ limit: '5mb' }));
 app.use(bodyParser.urlencoded({ extended: false }));
 
 // Request logger middleware