diff --git a/Dockerfile.dapper b/Dockerfile.dapper
index e6703cb1..a329608f 100644
--- a/Dockerfile.dapper
+++ b/Dockerfile.dapper
@@ -1,5 +1,5 @@
-FROM ubuntu:16.04
-# FROM arm=armhf/ubuntu:16.04
+FROM ubuntu:20.04
+# FROM arm=armhf/ubuntu:20.04 arm64=arm64v8/ubuntu:20.04
 
 ARG DAPPER_HOST_ARCH
 ENV HOST_ARCH=${DAPPER_HOST_ARCH} ARCH=${DAPPER_HOST_ARCH}
diff --git a/package/Dockerfile b/package/Dockerfile
index 2b9b2d8a..41a8bda6 100644
--- a/package/Dockerfile
+++ b/package/Dockerfile
@@ -1,3 +1,3 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 COPY rke /usr/bin/
 CMD ["rke"]