diff --git a/pupy/requirements.txt b/pupy/requirements.txt
index 13d51f72..e0665f67 100644
--- a/pupy/requirements.txt
+++ b/pupy/requirements.txt
@@ -38,6 +38,7 @@ dateparser
 puttykeys
 pyelftools
 filemagic
+xattr
 -e external/pykcp
 flake8
 flake8-per-file-ignores