diff --git a/docs/requirements.txt b/docs/requirements.txt
index 87d18ff..1dbd305 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,2 +1,3 @@
 ipykernel
-nbsphinx
\ No newline at end of file
+nbsphinx
+sphinx-rtd-theme
\ No newline at end of file