diff --git a/.readthedocs.yml b/.readthedocs.yml
index 7bfbe0b..48c8f26 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -6,6 +6,8 @@ build:
   jobs:
     post_checkout:
       - git fetch --unshallow || true
+sphinx:
+  configuration: doc/conf.py
 python:
   install:
     - requirements: doc/requirements.txt