diff --git a/docs/requirements.txt b/docs/requirements.txt
index e9a0202c..d08e1087 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,5 @@
 .
 kaleido
 sphinx>=1.5, !=1.7.3
-sphinx-rtd-theme
\ No newline at end of file
+sphinx-rtd-theme
+sphinx-copybutton