diff --git a/test-requirements.txt b/test-requirements.txt
index 5fba73e..07f5213 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking>=3.0.0,<3.1.0 # Apache-2.0
+hacking>=3.1.0,<4.0.0 # Apache-2.0
 
 coverage!=4.4,>=4.0 # Apache-2.0
 doc8>=0.6.0 # Apache-2.0
@@ -13,4 +13,5 @@ testtools>=2.2.0 # MIT
 os-testr>=1.0.0 # Apache-2.0
 reno>=2.5.0 # Apache-2.0
 flake8-import-order>=0.17.1 # LGPLv3
+pycodestyle>=2.0.0,<2.7.0 # MIT