diff --git a/dev-python/fs/fs-2.4.9.ebuild b/dev-python/fs/fs-2.4.9.ebuild
index a30c5ed47c00b..adf7a05eb3eed 100644
--- a/dev-python/fs/fs-2.4.9.ebuild
+++ b/dev-python/fs/fs-2.4.9.ebuild
@@ -32,6 +32,9 @@ DEPEND="${RDEPEND}
 		dev-python/pyftpdlib[${PYTHON_USEDEP}]
 		dev-python/psutil[${PYTHON_USEDEP}]
 		dev-python/unittest2[${PYTHON_USEDEP}]
+		python_targets_python2_7? (
+			dev-python/backports-os[python_targets_python2_7]
+		)
 	)"
 
 python_test() {