diff --git a/test-requirements.txt b/test-requirements.txt
index f28eee1..cb7d991 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,6 +5,7 @@
 hacking<0.11,>=0.10.0
 
 coverage>=3.6
+docutils>=0.11,!=0.13.1  # OSI-Approved Open Source, Public Domain
 fixtures>=0.3.14
 python-subunit>=0.0.18
 sphinx!=1.2.0,!=1.3b1,<1.3,>=1.1.2