diff --git a/dom/media/test/external/requirements-docs.txt b/dom/media/test/external/requirements-docs.txt
new file mode 100644
index 000000000000..a5109fff1e17
--- /dev/null
+++ b/dom/media/test/external/requirements-docs.txt
@@ -0,0 +1,5 @@
+sphinx
+sphinx-rtd-theme
+
+-e dom/media/test/external
+