diff --git a/project.py b/project.py
index ba18337..e8de484 100644
--- a/project.py
+++ b/project.py
@@ -63,7 +63,7 @@
     fd.close()
 
   try:
-    os.rename(lock, path)
+    platform_utils.rename(lock, path)
   except OSError:
     os.remove(lock)
     raise
@@ -2198,7 +2198,7 @@
 
     if os.path.exists(tmpPath):
       if curlret == 0 and self._IsValidBundle(tmpPath, quiet):
-        os.rename(tmpPath, dstPath)
+        platform_utils.rename(tmpPath, dstPath)
         return True
       else:
         os.remove(tmpPath)