diff --git a/test-requirements.txt b/test-requirements.txt
index 3e5e91e..8f6d570 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,4 +1,4 @@
-hacking>=3.0,<3.1.0 # Apache-2.0
+hacking>=6.1.0,<6.2.0 # Apache-2.0
 flake8-docstrings==1.7.0 # MIT
 
 coverage!=4.4,>=4.0 # Apache-2.0