diff --git a/test-requirements.txt b/test-requirements.txt
index 03e9602c..2097f91f 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,8 +4,10 @@
 
 coverage!=4.4,>=4.0 # Apache-2.0
 flake8-import-order>=0.17.1 # LGPLv3
-hacking>=3.1.0,<3.2.0 # Apache-2.0
+hacking>=3.1.0,<4.0.0 # Apache-2.0
 stestr>=1.0.0 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
 doc8>=0.6.0 # Apache-2.0
+pycodestyle>=2.0.0,<2.7.0 # MIT
 Pygments>=2.2.0 # BSD
+