diff --git a/scripts/release-manager/commands/stable-prs.js b/scripts/release-manager/commands/stable-prs.js
index abfe6756b2d87..9d3fa5ac73c3e 100644
--- a/scripts/release-manager/commands/stable-prs.js
+++ b/scripts/release-manager/commands/stable-prs.js
@@ -1,7 +1,6 @@
 'use strict';
 
 const chalk = require('chalk');
-const promisify = require('es6-promisify');
 const pify = require('pify');
 
 const git = require('./utils/git');