diff --git a/test-requirements.txt b/test-requirements.txt
index 268a0f57..fc18a304 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 hacking<0.11,>=0.10.0
-flake8_docstrings==0.2.1.post1
+flake8-docstrings==0.2.1.post1
 
 coverage>=3.6
 discover