diff --git a/test-requirements.txt b/test-requirements.txt
index 266da87..aa70f77 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,7 +4,7 @@
 
 # pep8
 hacking>=3.0,<3.1.0 # Apache-2.0
-flake8-import-order>=0.13 # LGPLv3
+flake8-import-order>=0.17.1 # LGPLv3
 # documentation
 doc8>=0.6.0 # Apache-2.0
 sphinx!=1.6.6,!=1.6.7,!=2.1.0,>=1.6.2 # BSD