diff --git a/src/exec/index.js b/src/exec/index.js
index e7d181b..0a3ab90 100644
--- a/src/exec/index.js
+++ b/src/exec/index.js
@@ -1,5 +1,4 @@
 require('any-observable/register/rxjs-all'); // eslint-disable-line import/no-unassigned-import
-require('rxjs/add/operator/merge');
 const Observable = require('any-observable');
 const streamToObservable = require('stream-to-observable');
 const execa = require('execa');