diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 84d2f93c3..b81209f26 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -17,6 +17,6 @@ sphinx:
 
 # We recommend specifying your dependencies to enable reproducible builds:
 # https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
- python:
-   install:
-   - requirements: rtd_requirements.txt
+python:
+  install:
+  - requirements: rtd_requirements.txt