diff --git a/Dockerfile.ubuntu-1804 b/Dockerfile.ubuntu-1804
index 2083a7c..83799ab 100644
--- a/Dockerfile.ubuntu-1804
+++ b/Dockerfile.ubuntu-1804
@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:23.04
 
 LABEL maintainer="LinuxGSM <me@danielgibbs.co.uk>"
 ARG DEBIAN_FRONTEND=noninteractive
diff --git a/Dockerfile.ubuntu-2004 b/Dockerfile.ubuntu-2004
index a83ad80..83799ab 100644
--- a/Dockerfile.ubuntu-2004
+++ b/Dockerfile.ubuntu-2004
@@ -1,4 +1,4 @@
-FROM ubuntu:20.04
+FROM ubuntu:23.04
 
 LABEL maintainer="LinuxGSM <me@danielgibbs.co.uk>"
 ARG DEBIAN_FRONTEND=noninteractive
diff --git a/Dockerfile.ubuntu-2204 b/Dockerfile.ubuntu-2204
index e264e6b..471277d 100644
--- a/Dockerfile.ubuntu-2204
+++ b/Dockerfile.ubuntu-2204
@@ -1,4 +1,4 @@
-FROM ubuntu:22.04
+FROM ubuntu:23.04
 
 LABEL maintainer="LinuxGSM <me@danielgibbs.co.uk>"
 ARG DEBIAN_FRONTEND=noninteractive