diff --git a/emdenoise/Dockerfile b/emdenoise/Dockerfile
index 9d45d13..4e8e8d3 100644
--- a/emdenoise/Dockerfile
+++ b/emdenoise/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 MAINTAINER MLPerf MLBox Working Group
 
 # Remove all stopped containers: docker rm $(docker ps -a -q)
diff --git a/hello_world/Dockerfile b/hello_world/Dockerfile
index a825241..ed86624 100644
--- a/hello_world/Dockerfile
+++ b/hello_world/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 MAINTAINER MLPerf MLBox Working Group
 
 RUN apt-get update && \
diff --git a/matmul/Dockerfile b/matmul/Dockerfile
index 2659749..1c97477 100644
--- a/matmul/Dockerfile
+++ b/matmul/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 MAINTAINER MLPerf MLBox Working Group
 
 # Remove all stopped containers: docker rm $(docker ps -a -q)
diff --git a/mnist/Dockerfile b/mnist/Dockerfile
index 55f39ec..cfa150f 100644
--- a/mnist/Dockerfile
+++ b/mnist/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 MAINTAINER MLPerf MLBox Working Group
 
 # Remove all stopped containers: docker rm $(docker ps -a -q)
diff --git a/mnist_fl/pytorch/build/Dockerfile b/mnist_fl/pytorch/build/Dockerfile
index d49d90d..ea91df5 100644
--- a/mnist_fl/pytorch/build/Dockerfile
+++ b/mnist_fl/pytorch/build/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 LABEL MLPerf MLBox Working Group
 
 RUN apt-get update && \
diff --git a/mnist_fl/tensorflow/build/Dockerfile b/mnist_fl/tensorflow/build/Dockerfile
index d49d90d..ea91df5 100644
--- a/mnist_fl/tensorflow/build/Dockerfile
+++ b/mnist_fl/tensorflow/build/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 LABEL MLPerf MLBox Working Group
 
 RUN apt-get update && \