diff --git a/.readthedocs.yml b/.readthedocs.yml
index 0487347..8d07796 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -3,7 +3,7 @@ version: 2
 sphinx:
   configuration: doc/conf.py
 build:
-  os: "ubuntu-22.04"
+  os: "ubuntu-26.04"
   tools:
     python: "3.14"
 python: