diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 30c1a526..9ef346b7 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -9,7 +9,7 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: 3
+    python: "3"
 
 
 # Build documentation in the docs/ directory