diff --git a/development/genStates.js b/development/genStates.js
index d92e2bc2e..bc274c757 100644
--- a/development/genStates.js
+++ b/development/genStates.js
@@ -1,6 +1,6 @@
 const fs = require('fs')
 const path = require('path')
-const { promisify } = require('util')
+const promisify = require('pify')
 
 start().catch(console.error)
 
diff --git a/development/run-version-bump.js b/development/run-version-bump.js
index fde14566e..98757f58e 100644
--- a/development/run-version-bump.js
+++ b/development/run-version-bump.js
@@ -1,4 +1,4 @@
-const { promisify } = require('util')
+const promisify = require('pify')
 const fs = require('fs')
 const readFile = promisify(fs.readFile)
 const writeFile = promisify(fs.writeFile)
diff --git a/test/unit/development/version–bump-test.js b/test/unit/development/version–bump-test.js
index 1c445c8b4..5e37d4410 100644
--- a/test/unit/development/version–bump-test.js
+++ b/test/unit/development/version–bump-test.js
@@ -1,6 +1,6 @@
 const assert = require('assert')
 const versionBump = require('../../../development/version-bump')
-const { promisify } = require('util')
+const promisify = require('pify')
 const fs = require('fs')
 const readFile = promisify(fs.readFile)
 const path = require('path')
@@ -41,5 +41,3 @@ describe('version bumper', function () {
     assert.ok(result.changelog.includes(expected))
   })
 })
-
-