diff --git a/doc/requirements.txt b/doc/requirements.txt
new file mode 100644
index 000000000..1ff1bd640
--- /dev/null
+++ b/doc/requirements.txt
@@ -0,0 +1,3 @@
+zuul-sphinx>=0.1.1
+sphinxcontrib-blockdiag>=1.1.0
+sphinxcontrib-seqdiag
diff --git a/test-requirements.txt b/test-requirements.txt
index b7e054615..a28500196 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -15,12 +15,9 @@ ansible>=2.5.1,<2.6 # https://review.openstack.org/567007
 # We need to pin ansible-lint to before 4.0 which blows up all over the place
 ansible-lint<4
 bashate>=0.2
-zuul-sphinx>=0.1.1
 stestr>=1.0.0 # Apache-2.0
 # For upload-logs-swift:
 openstacksdk>=0.17.1
 requests
 requestsexceptions
 bs4
-sphinxcontrib-blockdiag>=1.1.0
-sphinxcontrib-seqdiag
diff --git a/tox.ini b/tox.ini
index 6f30ba105..3390674d0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,6 +22,9 @@ deps = bindep
 commands = bindep test
 
 [testenv:docs]
+deps =
+  -r{toxinidir}/test-requirements.txt
+  -r{toxinidir}/doc/requirements.txt
 commands =
   sphinx-build -E -W -d doc/build/doctrees -b html doc/source/ doc/build/html