diff --git a/.readthedocs.yml b/.readthedocs.yml
index a9ec4331600..b83ba05b128 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -9,7 +9,7 @@ build:
   jobs:
     post_checkout:
     - git remote add upstream https://github.com/python-pillow/Pillow.git # For forks
-    - git fetch --all --tags
+    - git fetch upstream --tags
 
 python:
   install: