diff --git a/lib/util/move-file.js b/lib/util/move-file.js
index e12e981..422c829 100644
--- a/lib/util/move-file.js
+++ b/lib/util/move-file.js
@@ -2,8 +2,6 @@
 
 const fs = require('graceful-fs')
 const BB = require('bluebird')
-const chmod = BB.promisify(fs.chmod)
-const unlink = BB.promisify(fs.unlink)
 let move
 let pinflight
 
@@ -29,11 +27,8 @@ function moveFile (src, dest) {
           return cb(err)
         }
       }
-      return cb()
+      return fs.unlink(src, cb)
     })
-  }).then(() => {
-    // content should never change for any reason, so make it read-only
-    return BB.join(unlink(src), process.platform !== 'win32' && chmod(dest, '0444'))
   }).catch(err => {
     if (process.platform !== 'win32') {
       throw err