diff --git a/.readthedocs.yml b/.readthedocs.yml
index 34c241e9a..047904fe3 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -13,5 +13,5 @@ python:
   - requirements: docs/source/requirements.txt
   - method: pip
     path: .
-      extra_req:
-      - dev
\ No newline at end of file
+    extra_requirements:
+    - dev
\ No newline at end of file