diff --git a/check_eol-data/os.cfg b/check_eol-data/os.cfg
index c0deeb75a4e9838e3923c45004bd368ff41f8483..83d6a7cfeb6dfad374d39524727cacb2cb7e10ed 100644
--- a/check_eol-data/os.cfg
+++ b/check_eol-data/os.cfg
@@ -34,6 +34,8 @@ debian:7:2018-05-31:LTS
 debian:8:2020-06-06:LTS
 debian:9:2022-01-31:LTS
 debian:10:2022-01-31:EOL; no LTS version so far
+debian:11:2026-08-15:EOL; no LTS version so far
+
 
 
 # ----------------------------------------------------------------------
@@ -49,4 +51,4 @@ ubuntu:18:2028-04-30:Ubuntu 18.04 LTS
 ubuntu:20:2030-04-30:Ubuntu 20.04 LTS
 
 
-# ----------------------------------------------------------------------
\ No newline at end of file
+# ----------------------------------------------------------------------