diff --git a/Dockerfile b/Dockerfile
index 73dd0d36..ea770c2a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/linuxserver/baseimage-kasmvnc:debianbullseye
+FROM ghcr.io/linuxserver/baseimage-kasmvnc:debianbookworm
 
 # set version label
 ARG BUILD_DATE
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 58227f88..efd63013 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,4 +1,4 @@
-FROM ghcr.io/linuxserver/baseimage-kasmvnc:arm64v8-debianbullseye
+FROM ghcr.io/linuxserver/baseimage-kasmvnc:arm64v8-debianbookworm
 
 # set version label
 ARG BUILD_DATE