diff --git a/.docker/Dockerfile-ubuntu-amd64 b/.docker/Dockerfile-ubuntu-amd64
index 0484b44..4b955a9 100644
--- a/.docker/Dockerfile-ubuntu-amd64
+++ b/.docker/Dockerfile-ubuntu-amd64
@@ -1,4 +1,4 @@
-FROM multiarch/ubuntu-core:amd64-xenial
+FROM ubuntu:bionic
 
 RUN apt-get update
 # toolchain
diff --git a/.docker/Dockerfile-ubuntu-i386 b/.docker/Dockerfile-ubuntu-i386
index 4fa8923..a88060d 100644
--- a/.docker/Dockerfile-ubuntu-i386
+++ b/.docker/Dockerfile-ubuntu-i386
@@ -1,4 +1,4 @@
-FROM multiarch/ubuntu-core:i386-xenial
+FROM multiarch/ubuntu-core:i386-bionic
 
 RUN apt-get update
 # toolchain
diff --git a/.docker/build-ubuntu-package.sh b/.docker/build-ubuntu-package.sh
index a0427fa..8cf2372 100755
--- a/.docker/build-ubuntu-package.sh
+++ b/.docker/build-ubuntu-package.sh
@@ -6,8 +6,8 @@ rm -rf build-ubuntu
 mkdir build-ubuntu
 
 # patches
-git apply patches/qt5.6-qversionnumber.patch
-git apply patches/qt5.5-qstringlist-and-qinfo.patch
+#git apply patches/qt5.6-qversionnumber.patch
+#git apply patches/qt5.5-qstringlist-and-qinfo.patch
 
 # build
 cd build-ubuntu