diff --git a/docker/Dockerfile.amd64 b/docker/Dockerfile.amd64
index 8f98100..7743ea1 100644
--- a/docker/Dockerfile.amd64
+++ b/docker/Dockerfile.amd64
@@ -1,4 +1,4 @@
-FROM cr.44net.ch/baseimages/debian-s6:1.3.6-linux-amd64
+FROM cr.44net.ch/baseimages/debian-s6:11.5.5-linux-amd64
 
 # set version label
 ARG BUILD_VERSION
diff --git a/docker/Dockerfile.arm64 b/docker/Dockerfile.arm64
index 679c21f..9bbb332 100644
--- a/docker/Dockerfile.arm64
+++ b/docker/Dockerfile.arm64
@@ -1,4 +1,4 @@
-FROM cr.44net.ch/baseimages/debian-s6:1.3.6-linux-arm64
+FROM cr.44net.ch/baseimages/debian-s6:11.5.5-linux-arm64
 
 # set version label
 ARG BUILD_VERSION