diff --git a/.github/workflows/linux-ubuntu-16.04-5.12-appimage.yml b/.github/workflows/linux-ubuntu-16.04-5.12-appimage.yml
index cdb6ce1b2..eb37945c8 100644
--- a/.github/workflows/linux-ubuntu-16.04-5.12-appimage.yml
+++ b/.github/workflows/linux-ubuntu-16.04-5.12-appimage.yml
@@ -26,11 +26,8 @@ jobs:
 
         apt-get update
         DEBIAN_FRONTEND=noninteractive apt-get install -y -q \
-        software-properties-common \
-        apt-transport-https \
-        curl
-
-        curl https://apt.kitware.com/keys/kitware-archive-latest.asc | apt-key add -
+        software-properties-common=0.96.20.10 \
+        python3-software-properties=0.96.20.10
 
         add-apt-repository -y ppa:savoury1/qt-5-15
         add-apt-repository -y ppa:savoury1/kde-5-80
@@ -56,7 +53,8 @@ jobs:
         qml-module-qtquick2 qt5-qmake qtchooser qtconnectivity5-dev \
         qtdeclarative5-dev qtdeclarative5-private-dev qtlocation5-dev \
         qtpositioning5-dev qtscript5-dev qttools5-dev qttools5-dev-tools \
-        qtquickcontrols2-5-dev xvfb libbluetooth-dev libmtp-dev liblzma-dev
+        qtquickcontrols2-5-dev xvfb libbluetooth-dev libmtp-dev liblzma-dev \
+        curl
 
         update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 60 \
         --slave /usr/bin/g++ g++ /usr/bin/g++-9