diff --git a/.readthedocs.yml b/.readthedocs.yml
index 955ea36..21c3ef5 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -7,7 +7,7 @@ version: 2
 
 # Set the version of Python and other tools you might need
 build:
-  os: ubuntu-22.04
+  os: "ubuntu-22.04"
   tools: 
     python: "3.11"