diff --git a/docs/requirements.txt b/docs/requirements.txt
index e2110e3de..f3432ec16 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -4,3 +4,4 @@ sphinx-copybutton
 sphinxext-opengraph
 sphinx-inline-tabs
 sphinx-autobuild
+matplotlib