diff --git a/.readthedocs.yml b/.readthedocs.yml
index fa0ef4ba..97f3b097 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -5,7 +5,7 @@
 version: 2
 
 sphinx:
-  builder: htmldir
+  builder: dirhtml
   configuration: docs/conf.py
 
 build: