diff --git a/Scripts/release.py b/Scripts/release.py
index 434f017a..5a4f1d9e 100644
--- a/Scripts/release.py
+++ b/Scripts/release.py
@@ -373,6 +373,7 @@ def UploadFiles():
 	sftpcmds.write('put %s\\nsis-%s.zip\n' % (newverdir, VERSION))
 	sftpcmds.write('put nsis-%s-log.zip\n' % VERSION)
 	sftpcmds.write('put nsis-%s-strlen_8192.zip\n' % VERSION)
+	sftpcmds.close()
 
 	run(
 		SFTP % 'sftp-commands',