diff --git a/conf.py b/conf.py
index fe16fae..fbbfd18 100644
--- a/conf.py
+++ b/conf.py
@@ -42,6 +42,7 @@
     'sphinx.ext.todo',
     'sphinx.ext.viewcode',
     'sphinx.ext.graphviz',
+    'sphinx_panels',
     'sphinxcontrib.plantuml',
     'sphinx_tabs.tabs',
 ]