diff --git a/readme.md b/readme.md
index 16f8706..ee9168b 100644
--- a/readme.md
+++ b/readme.md
@@ -7,7 +7,7 @@ This role configures an Unbound DNS server.
 | Operating System | Version |
 | --- | ----- |
 | Alpine | 3.22 |
-| Debian | 12 |
+| Debian | 13 |
 
 ## Tags