diff --git a/docs/requirements.txt b/docs/requirements.txt
index 3d061af..f5d6b45 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1 +1,2 @@
-sphinx-copybutton>=0.5.2
\ No newline at end of file
+sphinx-copybutton>=0.5.2
+sphinx-rtd-theme
\ No newline at end of file