diff --git a/dev-requirements.txt b/dev-requirements.txt
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,13 +1,22 @@
-alabaster==0.7.4
-Babel==1.3
-docutils==0.12
-Jinja2==2.7.3
-MarkupSafe==0.23
-pip-tools==0.3.6
-Pygments==2.0.2
-pytz==2015.4
-six==1.9.0
-snowballstemmer==1.2.0
-sphinx-rtd-theme==0.1.8
-Sphinx==1.3.1
-wheel==0.24.0
+#
+# This file is autogenerated by pip-compile
+# Make changes in dev-requirements.in, then run this to update:
+#
+#    pip-compile dev-requirements.in
+#
+alabaster==0.7.6          # via sphinx
+babel==2.1.1              # via sphinx
+click==6.2                # via pip-tools
+docutils==0.12            # via sphinx
+first==2.0.1              # via pip-tools
+jinja2==2.8               # via sphinx
+markupsafe==0.23          # via jinja2
+pip-tools==1.2.0
+pygments==2.0.2           # via sphinx
+pytz==2015.7              # via babel
+requests==2.8.1
+six==1.10.0               # via pip-tools, sphinx
+snowballstemmer==1.2.0    # via sphinx
+sphinx-rtd-theme==0.1.9   # via sphinx
+sphinx==1.3.2
+wheel==0.26.0