diff --git a/system-images/android/sdk/Dockerfile b/system-images/android/sdk/Dockerfile
index 86249b2..3af5cdc 100644
--- a/system-images/android/sdk/Dockerfile
+++ b/system-images/android/sdk/Dockerfile
@@ -1,183 +1,183 @@
 FROM ubuntu:16.04
 
 # inspired by rabits/qt which we use for the gcc toolkit
 MAINTAINER Aleix Pol <aleixpol@kde.org>
 
-ARG QT_VERSION=5.12.2
-ARG QT_TAG=v5.12.2
+ARG QT_VERSION=5.12.3
+ARG QT_TAG=v5.12.3
 ARG NDK_VERSION=r18b
 ARG SDK_PLATFORM=android-21
 ARG SDK_BUILD_TOOLS=28.0.2
 ARG SDK_PACKAGES="tools platform-tools"
 
 ENV DEBIAN_FRONTEND noninteractive
 ENV QT_PATH /opt/Qt
 ENV QT_ANDROID ${QT_PATH}/${QT_VERSION}/android_armv7
 ENV ANDROID_HOME /opt/android-sdk
 ENV ANDROID_SDK_ROOT ${ANDROID_HOME}
 ENV ANDROID_NDK_ROOT /opt/android-ndk
 ENV ANDROID_NDK_HOST linux-x86_64
 ENV ANDROID_NDK_PLATFORM ${SDK_PLATFORM}
 ENV PATH ${QT_ANDROID}/bin:${ANDROID_HOME}/tools:${ANDROID_HOME}/tools/bin:${ANDROID_HOME}/platform-tools:${PATH}
 
 # Install updates & requirements:
 #  * unzip - unpack platform tools
 #  * git, openssh-client, ca-certificates - clone & build
 #  * locales, sudo - useful to set utf-8 locale & sudo usage
 #  * curl - to download Qt bundle
 #  * make, default-jdk, ant - basic build requirements
 #  * libsm6, libice6, libxext6, libxrender1, libfontconfig1, libdbus-1-3 - dependencies of Qt bundle run-file
 #  * libc6:i386, libncurses5:i386, libstdc++6:i386, libz1:i386 - dependencides of android sdk binaries
 RUN dpkg --add-architecture i386 && apt update && apt full-upgrade -y && apt install -y --no-install-recommends \
     unzip \
     git \
     openssh-client \
     ca-certificates \
     locales \
     sudo \
     curl \
     make \
     default-jdk \
     ant \
     build-essential \
     python \
     libsm6 \
     libice6 \
     libxext6 \
     libxrender1 \
     libfontconfig1 \
     libdbus-1-3 \
     libc6:i386 \
     libncurses5:i386 \
     libstdc++6:i386 \
     libz1:i386 \
 
     #build dependencies
     libxml-simple-perl \
     libjson-perl \
     ninja-build \
     build-essential \
     gperf gettext \
     python3 python3-paramiko python3-lxml python3-yaml \
     bison flex \
     ruby wget \
     #for dbus/expat
     automake libtool autoconf autoconf-archive pkg-config \
     #for translations
     subversion gnupg2 \
     #for karchive
     zlib1g-dev \
     && apt-get -qq clean \
     && locale-gen en_US.UTF-8 && dpkg-reconfigure locales
 
 ##########################
 
 RUN chmod a+w /opt/
 
 # Add group & user
 RUN groupadd -r user && useradd --create-home --gid user user && echo 'user ALL=NOPASSWD: ALL' > /etc/sudoers.d/user
 
 USER user
 WORKDIR /home/user
 ENV HOME /home/user
 
 ##########################
 
 # Download & unpack android SDK
 RUN curl -Lo /tmp/sdk-tools.zip 'https://dl.google.com/android/repository/sdk-tools-linux-3859397.zip' \
     && mkdir -p /opt/android-sdk && unzip -q /tmp/sdk-tools.zip -d /opt/android-sdk && rm -f /tmp/sdk-tools.zip \
     && yes | sdkmanager --licenses && sdkmanager --verbose "platforms;${SDK_PLATFORM}" "build-tools;${SDK_BUILD_TOOLS}" ${SDK_PACKAGES}
 
 # Download & unpack android NDK
 RUN mkdir /tmp/android && cd /tmp/android && curl -Lo ndk.zip "https://dl.google.com/android/repository/android-ndk-${NDK_VERSION}-linux-x86_64.zip" \
     && unzip -q ndk.zip && mv android-ndk-* $ANDROID_NDK_ROOT && chmod -R +rX $ANDROID_NDK_ROOT \
     && rm -rf /tmp/android
 
 RUN mkdir /opt/kdeandroid-deps
 COPY build-openssl-uptodate /opt/helpers/
 RUN bash /opt/helpers/build-openssl-uptodate
 
 RUN export OPENSSL_LIBS='-L/opt/kdeandroid-deps/lib -lssl -lcrypto' && \
     cd && git clone git://code.qt.io/qt/qt5.git --single-branch --branch ${QT_TAG} && \
     cd qt5 && \
     ./init-repository && \
     ./configure -xplatform android-clang --disable-rpath -openssl-linked -nomake tests -nomake examples -android-ndk /opt/android-ndk -android-sdk /opt/android-sdk -skip qttranslations -skip qtserialport -skip qtwebengine -no-warnings-are-errors -opensource -confirm-license -c++std c++14 -prefix $QT_ANDROID -I/opt/kdeandroid-deps/include && \
     make -j`nproc` && \
     make -j`nproc` install && \
     cd .. && rm -rf qt5
 
 ##########################
 
 RUN mkdir /opt/nativetooling
 
 ENV ANDROID_NDK $ANDROID_NDK_ROOT
 COPY gitconfig $HOME/.gitconfig
 
 RUN mkdir -p /opt/cmake \
     && curl -Lo /tmp/cmake.sh https://cmake.org/files/v3.13/cmake-3.13.4-Linux-x86_64.sh \
     && bash /tmp/cmake.sh --skip-license --prefix=/opt/cmake --exclude-subdir \
     && rm /tmp/cmake.sh
 ENV PATH="/opt/cmake/bin:${PATH}"
 
 # makes sure gradle is downloaded, otherwise it will be downloaded every time
 RUN $QT_ANDROID/src/3rdparty/gradle/gradlew
 
 # compile kf5 tooling
 RUN cd && git clone git://code.qt.io/qt/qtbase.git --single-branch --branch ${QT_TAG} && cd qtbase \
     && ./configure -prefix /opt/nativetooling -opensource -confirm-license -no-gui -release -optimize-size -nomake tests -nomake examples -no-feature-concurrent \
     && make -j`nproc` && make install && rm -rf ~/qtbase
 
 # QtQml Needed for native tooling (ki18n)
 RUN cd && git clone git://code.qt.io/qt/qtdeclarative.git --single-branch --branch ${QT_TAG} && cd qtdeclarative \
     && QMAKESPEC=linux-g++ /opt/nativetooling/bin/qmake . && make -j`nproc` && make install && rm -rf ~/qtdeclarative
 
 # Replace androiddeployqt with dev, which has a bunch of patches we need (at least until Qt 5.12)
 RUN cd && mkdir androiddeployqt && cd androiddeployqt \
     && wget https://code.qt.io/cgit/qt/qtbase.git/plain/src/tools/androiddeployqt/main.cpp?h=dev -O main.cpp \
     && echo "cmake_minimum_required(VERSION 3.11)\n\
             find_package(Qt5Core REQUIRED)\n\
             add_executable(androiddeployqt main.cpp)\n\
             target_link_libraries(androiddeployqt Qt5::Core)\n" > CMakeLists.txt && cmake . -DQt5Core_DIR=/opt/nativetooling/lib/cmake/Qt5Core && make && cp androiddeployqt /opt/Qt/${QT_VERSION}/android_armv7/bin/androiddeployqt \
     && cd && rm -rf androiddeployqt
 
 COPY build-cmake-native /opt/helpers/
 RUN /opt/helpers/build-cmake-native extra-cmake-modules kde:extra-cmake-modules -DCMAKE_INSTALL_PREFIX=/opt/kdeandroid-deps -DCMAKE_PREFIX_PATH="$QT_ANDROID;/opt/kdeandroid-deps"
 RUN /opt/helpers/build-cmake-native kconfig     kde:kconfig     -DCMAKE_INSTALL_PREFIX=/opt/nativetooling -DBUILD_SHARED_LIBS=OFF -DCMAKE_PREFIX_PATH=/opt/kdeandroid-deps/ -DBUILD_TESTING=OFF -DQt5_DIR=/opt/nativetooling/lib/cmake/Qt5 -DKCONFIG_USE_GUI=OFF
 RUN /opt/helpers/build-cmake-native kcoreaddons kde:kcoreaddons -DCMAKE_INSTALL_PREFIX=/opt/nativetooling -DBUILD_SHARED_LIBS=OFF -DCMAKE_PREFIX_PATH=/opt/kdeandroid-deps/ -DBUILD_TESTING=OFF -DQt5Core_DIR=/opt/nativetooling/lib/cmake/Qt5Core -DCMAKE_DISABLE_FIND_PACKAGE_Qt5Widgets=ON
 
 COPY build-standalone build-cmake /opt/helpers/
 ENV STANDALONE_CC=clang
 ENV STANDALONE_CXX=clang++
 ENV STANDALONE_EXTRA=--stl=libc++
 ENV ANDROID_NDK_TOOLCHAIN_PREFIX=arm-linux-androideabi
 
 #build expat
 RUN cd && git clone https://github.com/libexpat/libexpat.git --single-branch && cd libexpat/expat \
     && /opt/helpers/build-standalone "./buildconf.sh && ./configure --prefix=/opt/kdeandroid-deps --host=${ANDROID_NDK_TOOLCHAIN_PREFIX} && cd lib && make -j`nproc` && make install" \
     && cd ../.. && rm -rf libexpat
 
 #build dbus
 RUN EXTRA_CMAKE_SUBDIR=cmake GIT_EXTRA="--branch dbus-1.12.10" /opt/helpers/build-cmake dbus git://anongit.freedesktop.org/git/dbus/dbus -DEXPAT_INCLUDE_DIR=/opt/kdeandroid-deps/include -DEXPAT_LIBRARY=/opt/kdeandroid-deps/lib/libexpat.so
 
 #build qtdbus
 RUN    sed -i.bak "s|#define QT_NO_DBUS|//#define QT_NO_DBUS //we install it separate from the SDK|g" $QT_ANDROID/include/QtCore/qconfig.h \
     && sed -i.bak "s/QT_FEATURE_dbus -1/QT_FEATURE_dbus 1/g" $QT_ANDROID/include/QtCore/${QT_VERSION}/QtCore/private/qconfig_p.h \
     && sed -i.bak "s/QT_FEATURE_dbus_linked -1/QT_FEATURE_dbus_linked 1/g" $QT_ANDROID/include/QtCore/${QT_VERSION}/QtCore/private/qconfig_p.h \
     && cd && git clone git://code.qt.io/qt/qtbase.git --single-branch --branch ${QT_TAG} && cd qtbase/src/dbus && qmake && make -j`nproc` && make install && cd && rm -rf qtbase \
     && ln -s /opt/nativetooling/bin/qdbusxml2cpp $QT_ANDROID/bin/ \
     && ln -s /opt/nativetooling/bin/qdbuscpp2xml $QT_ANDROID/bin/
 
 # needs to be after building qt, otherwise it breaks weirdly
 ENV QMAKESPEC android-clang
 
 RUN /opt/helpers/build-cmake libintl-lite https://github.com/j-jorge/libintl-lite.git
 COPY build-qt build-generic build-eigen build-poppler build-vlcqt build-gstreamer-binaries build-kde-dependencies build-kde-project create-apk get-apk-args \
      target-from-manifest.py target-from-appdata.py skip /opt/helpers/
 
 RUN     sed -i.bak 's/android:minSdkVersion="16"/android:minSdkVersion="21"/g' $QT_ANDROID/src/android/templates/AndroidManifest.xml \
     &&  sed -i.bak 's/|density//g' $QT_ANDROID/src/android/templates/AndroidManifest.xml
 
 ENV LANG=en_US.UTF-8
 ENV LANGUAGE=en_US.UTF-8
 ENV LC_ALL=en_US.UTF-8
 ENV PERSIST=1