diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 42cbf18a0f712..34735700a224e 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -6,17 +6,16 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: "3.8"
+    python: '3.9'
 
 sphinx:
-   configuration: docs/source/conf.py
-   fail_on_warning: true
+  configuration: docs/source/conf.py
+  fail_on_warning: true
 
 # If using Sphinx, optionally build your docs in additional formats such as PDF
 formats: []
 
 # Optionally declare the Python requirements required to build your docs
 python:
-   install:
-   - requirements: docs/requirements-docs.txt
-
+  install:
+    - requirements: docs/requirements-docs.txt