diff --git a/src/robot.js b/src/robot.js
index 74046d4ca..2c7f12cbd 100644
--- a/src/robot.js
+++ b/src/robot.js
@@ -444,7 +444,7 @@ class Robot {
     app.use(express.query())
 
     app.use(express.json())
-    app.use(express.urlencoded({ limit, parameterLimit: paramLimit }))
+    app.use(express.urlencoded({ limit, parameterLimit: paramLimit, extended: true }))
     // replacement for deprecated express.multipart/connect.multipart
     // limit to 100mb, as per the old behavior
     app.use(multipart({ maxFilesSize: 100 * 1024 * 1024 }))