diff --git a/requirements-dev.txt b/requirements-dev.txt
index c579686..63f7ccf 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -30,5 +30,5 @@ selenium==3.3.1
 six==1.10.0               # via django-appconf, sphinx, sphinxcontrib-spelling
 snowballstemmer==1.2.1    # via sphinx
 sphinx-rtd-theme==0.2.4   # via sphinx
-sphinx==1.5.4
+sphinx==1.5.5
 sphinxcontrib-spelling==2.3.0