diff --git a/test-requirements.txt b/test-requirements.txt
index 39db5ad3..88b1d654 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -12,6 +12,7 @@ python-subunit>=1.0.0 # Apache-2.0/BSD
 sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
 oslosphinx>=4.7.0 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
+stestr>=1.0.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
 testresources>=2.0.0 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT