diff --git a/.drone.yml b/.drone.yml
index b0ca7c3..e633d86 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -1,6 +1,6 @@
 pipeline:
   gcc6:
-    image: debian:jessie-slim
+    image: ubuntu:xenial
     pull: true
     environment:
       - LANG=C.utf8
@@ -8,15 +8,14 @@ pipeline:
       - CXXFLAGS=-pipe -O2
     commands:
       - rm /etc/apt/apt.conf.d/docker-clean
-      - echo "APT::Default-Release \"jessie\";" >> /etc/apt/apt.conf.d/00default_release
-      - echo "deb http://deb.debian.org/debian jessie-backports main" >> /etc/apt/sources.list.d/backports.list
-      - echo "deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu trusty main" >> /etc/apt/sources.list.d/ubuntu-toolchain-r.list
+      - echo "deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu xenial main" >> /etc/apt/sources.list.d/ubuntu-toolchain-r.list
+      # - echo "deb http://ppa.launchpad.net/george-edison55/cmake-3.x/ubuntu xenial main" >> /etc/apt/sources.list.d/cmake-3.x.list
       - gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0x60c317803a41ba51845e371a1e9377a2ba9ef27f
+      # - gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0xb118cd3c377df930edd06c67084ecfc5828ab726
       - gpg --armor --export 0x60c317803a41ba51845e371a1e9377a2ba9ef27f | apt-key add -
+      # - gpg --armor --export 0xb118cd3c377df930edd06c67084ecfc5828ab726 | apt-key add -
       - apt-get update -q
-      - apt-get install -qy -t trusty g++-6
-      - apt-get install -qy g++ pkg-config
-      - apt-get install -qy -t jessie-backports cmake
+      - apt-get install -qy g++-6 cmake pkg-config
       - apt-get install -qy libvsqlitepp-dev libboost-dev libxdg-basedir-dev qt5-default qttools5-dev-tools qttools5-dev libconfig++-dev
       - apt-get install -qy dpkg-dev rpm file wget
       - gpg --import /var/autosign_gpg.key
@@ -166,7 +165,7 @@ pipeline:
       - /var/cache/debian-package-cache:/var/cache/apt/archives
 
   prepare_release:
-    image: debian:jessie-slim
+    image: ubuntu:xenial
     pull: true
     when:
       event: tag
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 37b3ced..b1ee387 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.6)
+cmake_minimum_required (VERSION 3.2)
 project (whyblocked
          VERSION 0.12.1
          LANGUAGES CXX
diff --git a/README.md b/README.md
index 6882c51..c47c6ea 100644
--- a/README.md
+++ b/README.md
@@ -31,14 +31,14 @@ Gentoo ebuilds are available via my
 
 * C++ compiler (tested: [gcc](https://gcc.gnu.org/) 6/7/8,
   [clang](https://llvm.org/) 3/5/6)
-* [cmake](https://cmake.org/) (at least 3.6)
-* [vsqlite++](http://vsqlite.virtuosic-bytes.com/) (tested: 0.3.13)
+* [cmake](https://cmake.org/) (at least 3.2)
+* [vsqlite++](http://vsqlite.virtuosic-bytes.com/) (tested: 0.3)
 * [libxdg-basedir](http://repo.or.cz/w/libxdg-basedir.git) (tested: 1.2)
-* [qtcore](https://www.qt.io/) (tested: 5.11/5.7)
+* [qtcore](https://www.qt.io/) (tested: 5.11/5.2)
 * Optional
-    * GUI: [qtwidgets](https://www.qt.io/) (tested: 5.11/5.7)
-    * GUI: [libconfig++](https://github.com/hyperrealm/libconfig) (tested: 1.5)
-    * Translations: [lupdate & lrelease](http://doc.qt.io/qt-5/linguist-manager.html) (tested: 5.11/5.7)
+    * GUI: [qtwidgets](https://www.qt.io/) (tested: 5.11/5.2)
+    * GUI: [libconfig++](https://github.com/hyperrealm/libconfig) (tested: 1.5 / 1.4)
+    * Translations: [lupdate & lrelease](http://doc.qt.io/qt-5/linguist-manager.html) (tested: 5.11/5.2)
 
 #### Get sourcecode