diff --git a/doc/conf.py b/doc/conf.py
index 20009721f95..6c71f5bcd6c 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -45,3 +45,5 @@
         "path": "visual-programming/source/"
     },
 }
+
+html_theme = "alabaster"