diff --git a/test-requirements.txt b/test-requirements.txt
index 18de5acca9..ba0f5c5690 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -12,6 +12,7 @@ hacking>=1.1.0,<1.2.0 # Apache-2.0
 oslo.log>=3.36.0 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
 PrettyTable<0.8,>=0.7.1 # BSD
+pyflakes>=1.4.0,<1.5
 PyYAML>=3.10 # MIT
 python-barbicanclient>=4.0.0 # Apache-2.0
 python-heatclient>=1.10.0 # Apache-2.0