diff --git a/.readthedocs.yaml b/.readthedocs.yml
similarity index 98%
rename from .readthedocs.yaml
rename to .readthedocs.yml
index ac3d7abc6cfd32bdda00f13b5756d5cae9f39c4d..361e5ddb57f3546bfb1fedc9b6986a492866fbb0 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yml
@@ -8,7 +8,7 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: "3.12"
+    python: "3.9"
     # You can also specify other tool versions:
     # nodejs: "20"
     # rust: "1.70"
diff --git a/docs/source/conf.py b/docs/source/conf.py
index b9208abedee0591c08f003e664d6af379ade017c..652db3440781f3505ca78f2fdc67f157e80ec10b 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -11,8 +11,9 @@
 # documentation root, use os.path.abspath to make it absolute.
 import os
 import sys
+sys.path.insert(0, os.path.abspath('..'))
 sys.path.insert(0, os.path.abspath(r'..\..'))
-# sys.path.insert(0, os.path.abspath('..'))
+# sys.path.insert(0, os.path.abspath(r'..\..'))
 
 # -- Project information -----------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information