diff --git a/Dockerfile b/Dockerfile
index b70013e..3740af3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,4 @@
-# based-on Ubuntu-18.04 (bionic)
-FROM ubuntu:bionic
+FROM ubuntu:22.04
 
 ARG DEBIAN_FRONTEND="noninteractive" 
 ENV TZ="Australia/Sydney"
@@ -15,7 +14,7 @@ ENV LANG en_US.utf8
 RUN apt-get update -y
 
 #install the required packages
-RUN apt-get install wget curl git python python3 openjdk-8-jdk openjdk-11-jdk ant autoconf bison pkg-config zip unzip build-essential gettext gcc-multilib libx11-dev libxext-dev libxrender-dev libXrandr-devel libxtst-dev libxt-dev libcups2-dev libasound2-dev libfontconfig1-dev libtool -y && apt-get clean
+RUN apt-get install wget curl git python3 openjdk-8-jdk openjdk-11-jdk ant autoconf bison pkg-config zip unzip build-essential gettext gcc-multilib libx11-dev libxext-dev libxrender-dev libxtst-dev libxt-dev libxrandr-dev libcups2-dev libasound2-dev libfontconfig1-dev libtool -y && apt-get clean
 
 # get rust toolchain version
 RUN wget https://raw.githubusercontent.com/mmtk/mmtk-core/master/rust-toolchain