diff --git a/docs-requirements.txt b/docs-requirements.txt
new file mode 100644
index 00000000..0e40af67
--- /dev/null
+++ b/docs-requirements.txt
@@ -0,0 +1 @@
+Sphinx==1.8.2
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 5f4988e2..a957593e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
-Sphinx==1.8.2
+
diff --git a/tox.ini b/tox.ini
index 75225fed..a5445426 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,6 +12,7 @@ setenv = VIRTUAL_ENV={envdir}
 usedevelop = True
 install_command = pip install -U {opts} {packages}
 deps = -r{toxinidir}/test-requirements.txt
+       -r{toxinidir}/docs-requirements.txt
 commands = find . -type f -name "*.pyc" -delete
 whitelist_externals = find
                       rm