diff --git a/dev-requirements.txt b/dev-requirements.txt
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -4,16 +4,21 @@
 #
 #    pip-compile dev-requirements.in
 #
-click==5.1                # via pip-tools
+alabaster==0.7.7          # via sphinx
+babel==2.2.0              # via sphinx
+click==6.3                # via pip-tools
 docutils==0.12            # via sphinx
 first==2.0.1              # via pip-tools
 Flask-Script==2.0.5
-flask==0.10.1             # via flask-script
+Flask==0.10.1             # via flask-script
 itsdangerous==0.24        # via flask
-jinja2==2.8               # via flask, sphinx
-markupsafe==0.23          # via jinja2
-pip-tools==1.1.3
-pygments==2.0.2           # via sphinx
-six==1.10.0               # via pip-tools
-Sphinx==1.2.3
-werkzeug==0.10.4          # via flask
+Jinja2==2.8               # via flask, sphinx
+MarkupSafe==0.23          # via jinja2
+pip-tools==1.6
+Pygments==2.1.3           # via sphinx
+pytz==2015.7              # via babel
+six==1.10.0               # via pip-tools, sphinx
+snowballstemmer==1.2.1    # via sphinx
+sphinx-rtd-theme==0.1.9   # via sphinx
+Sphinx==1.3.6             # via sphinx-rtd-theme
+Werkzeug==0.11.4          # via flask