diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 3d3feac4..346900b2 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -2,7 +2,7 @@ version: 2
 build:
   os: ubuntu-20.04
   tools:
-    python: 3.10
+    python: "3.10"
 python:
   install:
     - requirements: requirements/docs.txt