diff --git a/test-requirements.txt b/test-requirements.txt
index 60d8235e..8bc43496 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,4 +1,4 @@
 hacking>=0.10.2
-flake8>=2.2.4,<2.6.0
+flake8>=2.2.4,<=2.5.4
 nose==1.3.0
 mock>=1.0.1