diff --git a/ChangeLog b/ChangeLog
index 3e8ae06..f86fd27 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,4 @@
-UPGRADE: Debian version from 12.4 to 12.5 in Dockerfile
+UPGRADE: Debian version from 12.4 to 12.6 in Dockerfile
 
 1.11.0
 
diff --git a/Dockerfile b/Dockerfile
index 96165be..a95218a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG  IMAGE_TAG=12.5-slim
+ARG  IMAGE_TAG=12.6-slim
 FROM debian:${IMAGE_TAG}
 
 MAINTAINER IoT team