diff --git a/scripts/lib/devtool/upgrade.py b/scripts/lib/devtool/upgrade.py
index 706f91c935..18c5b66a29 100644
--- a/scripts/lib/devtool/upgrade.py
+++ b/scripts/lib/devtool/upgrade.py
@@ -281,6 +281,7 @@ def _extract_new_source(newpv, srctree, no_patch, srcrev, srcbranch, branch, kee
             logger.info('Preserving temporary directory %s' % tmpsrctree)
         else:
             shutil.rmtree(tmpsrctree)
+            shutil.rmtree(tmpdir)
 
     return (rev, md5, sha256, srcbranch, srcsubdir_rel)