diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index d4cfec4684676d564672ad8046aa335e028a3966..9e22fda928e261737d9cccdff23e81236ccbc016 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -5,4 +5,4 @@
 version: 2
 
 sphinx:
-	configuration: rtd/conf.py
+    configuration: rtd/conf.py