diff --git a/.gitlab-ci-files/job-linux-desktop-debian9.yml b/.gitlab-ci-files/job-linux-desktop-debian9.yml
index a6355294e..35f7e2d75 100644
--- a/.gitlab-ci-files/job-linux-desktop-debian9.yml
+++ b/.gitlab-ci-files/job-linux-desktop-debian9.yml
@@ -2,7 +2,7 @@
 
 job-debian9-ninja-gcc:
   tags: [ "docker-debian9" ]
-  image: gitlab.linphone.org:4567/bc/public/linphone-desktop/bc-dev-debian9-qt-fuse-wget-gpg2:$DEBIAN_9_QT_IMAGE_VERSION
+  image: gitlab.linphone.org:4567/bc/public/linphone-desktop/bc-dev-debian9-appimage:$DEBIAN_9_QT_IMAGE_VERSION
   except:
     refs:
       - schedules
@@ -29,7 +29,7 @@ job-debian9-ninja-gcc-smallsdk:
 
 job-debian9-makefile-gcc:
   tags: [ "docker-debian9" ]
-  image: gitlab.linphone.org:4567/bc/public/linphone-desktop/bc-dev-debian9-qt-fuse-wget-gpg2:$DEBIAN_9_QT_IMAGE_VERSION
+  image: gitlab.linphone.org:4567/bc/public/linphone-desktop/bc-dev-debian9-appimage:$DEBIAN_9_QT_IMAGE_VERSION
   only:
     variables:
       - $NIGHTLY_MASTER
@@ -55,7 +55,7 @@ job-debian9-ninja-clang:
   only:
     variables:
       - $NIGHTLY_MASTER
-  image: gitlab.linphone.org:4567/bc/public/linphone-desktop/bc-dev-debian9-qt-fuse-wget-gpg2:$DEBIAN_9_QT_IMAGE_VERSION
+  image: gitlab.linphone.org:4567/bc/public/linphone-desktop/bc-dev-debian9-appimage:$DEBIAN_9_QT_IMAGE_VERSION
   variables:
     CMAKE_OPTIONS: -DENABLE_DOC=ON -DENABLE_G729=ON -DENABLE_PQCRYPTO=ON
     CMAKE_GENERATOR: Ninja
@@ -73,7 +73,7 @@ job-debian9-ninja-clang-novideo:
 
 job-debian9-makefile-clang:
   tags: [ "docker-debian9" ]
-  image: gitlab.linphone.org:4567/bc/public/linphone-desktop/bc-dev-debian9-qt-fuse-wget-gpg2:$DEBIAN_9_QT_IMAGE_VERSION
+  image: gitlab.linphone.org:4567/bc/public/linphone-desktop/bc-dev-debian9-appimage:$DEBIAN_9_QT_IMAGE_VERSION
   only:
     variables:
       - $NIGHTLY_MASTER
@@ -112,7 +112,7 @@ job-debian9-makefile-clang:
 job-debian9-makefile-clang-package:
   stage: package
   tags: [ "docker-test-liblinphone" ]
-  image: gitlab.linphone.org:4567/bc/public/linphone-desktop/bc-dev-debian9-qt-fuse-wget-gpg2:$DEBIAN_9_QT_IMAGE_VERSION
+  image: gitlab.linphone.org:4567/bc/public/linphone-desktop/bc-dev-debian9-appimage:$DEBIAN_9_QT_IMAGE_VERSION
   dependencies: []
   only:
      variables:
@@ -187,7 +187,7 @@ job-debian9-makefile-clang-plugins-deploy:
 job-debian9-debug:
   stage: deploy
   tags: [ "docker-test-debian9-liblinphone-nuc" ]
-  image: gitlab.linphone.org:4567/bc/public/linphone-desktop/bc-dev-debian9-qt-fuse-wget-gpg2:$DEBIAN_9_QT_IMAGE_VERSION
+  image: gitlab.linphone.org:4567/bc/public/linphone-desktop/bc-dev-debian9-appimage:$DEBIAN_9_QT_IMAGE_VERSION
   dependencies: []
   only:
     variables:
diff --git a/.gitlab-ci-files/job-macosx-desktop.yml b/.gitlab-ci-files/job-macosx-desktop.yml
index 3328f9bc9..90eea8cea 100644
--- a/.gitlab-ci-files/job-macosx-desktop.yml
+++ b/.gitlab-ci-files/job-macosx-desktop.yml
@@ -5,8 +5,8 @@
 
 .build_all_script: &build_all_script |
   ccache -s
-  export Qt5_DIR=~/Qt/5.15.2/clang_64/lib/cmake/Qt5
-  export PATH=~/Qt/5.15.2/clang_64/bin:$PATH
+  export Qt5_DIR=~/Qt/$QT_MAC_VER/lib/cmake/Qt5
+  export PATH=~/Qt/$QT_MAC_VER/bin:$PATH
   if [ -d "build" ]; then rm -rf build; fi;
   mkdir -p build/OUTPUT
   cd build
diff --git a/.gitlab-ci-files/job-windows-desktop.yml b/.gitlab-ci-files/job-windows-desktop.yml
index 3f2e38dfd..220422726 100644
--- a/.gitlab-ci-files/job-windows-desktop.yml
+++ b/.gitlab-ci-files/job-windows-desktop.yml
@@ -25,7 +25,7 @@
     - echo $PATH_TEMP
     - $env:Path = ($PATH_TEMP + ";C:\msys64\" + $MINGW_TYPE + "\bin;" + $env:SIGNTOOL_ROOT + "\x64;C:\msys64;C:\msys64\usr\bin")
     - If ($MINGW_TYPE -eq "mingw64") {Import-BatchEnvironment "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars64.bat"} Else {Import-BatchEnvironment "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\Tools\VsDevCmd.bat"}
-    - If ($MINGW_TYPE -eq "mingw64") {$env:Path = ($env:Path + ";C:\Qt\5.15.2\msvc2019_64\bin")} Else {$env:Path = ($env:Path + ";C:\Qt\5.14.2\msvc2019\bin")}
+    - If ($MINGW_TYPE -eq "mingw64") {$env:Path = ($env:Path + ";C:\Qt\" + $env:QT_WIN_VER + "\msvc2019_64\bin")} Else {$env:Path = ($env:Path + ";C:\Qt\" + $env:QT_WIN_VER + "\msvc2019\bin")}
     - echo $env:Path
     - If ( Test-Path -Path "build-desktop" ) {Remove-Item -recurse -force -path "build-desktop" }
     - mkdir build-desktop
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 13f08e4df..814af29b4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -23,7 +23,7 @@ variables:
 # Docker image version
   ARCHLINUX_IMAGE_VERSION: latestupdated
   CENTOS_7_QT_IMAGE_VERSION: 20211012_add_qtwebview
-  DEBIAN_9_QT_IMAGE_VERSION: 20211027_update_qt_5.12.12
+  DEBIAN_9_QT_IMAGE_VERSION: 20230222_qtcom
   DEBIAN_10_IMAGE_VERSION: 20210217_python3
   UBUNTU_ROLLING_IMAGE_VERSION: 20211012_add_qtwebview
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04eb8cb60..68d08ac76 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Remove unadmin feature to self because of not fully supported.
 - Save Stun/Turn proxy configuration.
 - Switch off camera at startup.
+- Upgrade Qt to 5.15.12
 - Update SDK to 5.2.24 (Fix unresponsive video conference on Mac/Windows)
 
 ## 5.0.10 - 2023-02-02
diff --git a/docker-files/bc-dev-debian9-qt-fuse-wget-gpg2 b/docker-files/bc-dev-debian9-appimage
similarity index 60%
rename from docker-files/bc-dev-debian9-qt-fuse-wget-gpg2
rename to docker-files/bc-dev-debian9-appimage
index 8fcdec1eb..cd11d839e 100644
--- a/docker-files/bc-dev-debian9-qt-fuse-wget-gpg2
+++ b/docker-files/bc-dev-debian9-appimage
@@ -1,11 +1,15 @@
-FROM gitlab.linphone.org:4567/bc/public/linphone-sdk/bc-dev-debian9:20210217_python3
+FROM gitlab.linphone.org:4567/bc/public/linphone-sdk/bc-dev-debian9:20210421_python3_fix_pip
+
+ARG QT_EMAIL
+ARG QT_PASSWORD
+ARG QT_VERSION=5.15.12
+ARG QT_VERSION_MODULE=qt.qt5.51512
 
 MAINTAINER Peio Rigaux <peio.rigaux@belledonne-communications.com>
 
 #Tools for QT buid script
 RUN sudo apt-get update && sudo apt-get install -y pigz
 
-
 #QT Dependencies
 #atspi and dbus may be used to enable qt accessibility for screan reader
 #xkbcommon is needed for special keyboard features
@@ -17,20 +21,23 @@ RUN sudo apt-get update && sudo apt-get install -y libxcb-keysyms1-dev libxcb-im
 
 #needed fot qt to find dbus
 ENV PKG_CONFIG_PATH=/usr/lib/x86_64-linux-gnu/pkgconfig
-# Build qt5.12.12
-RUN git clone -b master --single-branch https://gitlab.linphone.org/BC/public/linphone-desktop.git && \
-    ./linphone-desktop/tools/build_qt_rpm && \
-    find "./linphone-desktop/rpm-linphone-qt-5.12/rpmbuild/RPMS/x86_64/" -iname "*.rpm" -exec sudo fakeroot alien -d {} + && \
-    find "." -maxdepth 1 -iname "*.deb" -exec sudo dpkg -i --force-overwrite {} + && \
-    rm -rf ./linphone-desktop
-
-ENV Qt5_DIR=/opt/com.belledonne-communications/linphone/lib/cmake
-ENV PATH=/opt/com.belledonne-communications/linphone/bin:$PATH
 
 #Appimage deps
 RUN sudo apt-get install -y wget fuse libfuse2 gnupg2
 
+#Update certificates
+RUN sudo sed -i '/^mozilla\/DST_Root_CA_X3/s/^/!/' /etc/ca-certificates.conf
+RUN sudo update-ca-certificates -f
+
+# Add Qt and download
+ADD https://download.qt.io/development_releases/online_installers/4.4/qt-unified-linux-x64-4.4.0-beta-online.run /home/bc/qt-unified-linux-x64-4.4.0-beta-online.run
+RUN sudo chmod +x /home/bc/qt-unified-linux-x64-4.4.0-beta-online.run
+RUN sudo /home/bc/qt-unified-linux-x64-4.4.0-beta-online.run install $QT_VERSION_MODULE $QT_VERSION_MODULE.qtpdf $QT_VERSION_MODULE.qtwebengine $QT_VERSION_MODULE.qtnetworkauth --email $QT_EMAIL --pw $QT_PASSWORD --accept-licenses --accept-obligations --auto-answer telemetry-question=No,AssociateCommonFiletypes=Yes --confirm-command --no-default-installations
+
 USER bc
 WORKDIR /home/bc
+
+ENV Qt5_DIR=/opt/Qt/$QT_VERSION/gcc_64/lib/cmake
+ENV PATH=/opt/Qt/$QT_VERSION/gcc_64/bin:$PATH
 ENV PS1='\[\e[34m\]\u@bc-dev-centos7>\[\e[0m\] '
 CMD bash
diff --git a/linphone-app/tools/create_appimage.sh b/linphone-app/tools/create_appimage.sh
index 5f8a85dca..c180a84e0 100755
--- a/linphone-app/tools/create_appimage.sh
+++ b/linphone-app/tools/create_appimage.sh
@@ -32,6 +32,9 @@ BIN_SOURCE_DIR="OUTPUT/"
 
 WORK_DIR="WORK/Packages/AppImageDir"
 
+# Goal : avoid fuse on CI. --appimage-extract-and-run is not enough because of not propagate to plugins.
+export APPIMAGE_EXTRACT_AND_RUN=1
+
 rm -rf ${WORK_DIR}/AppDir
 mkdir -p "${WORK_DIR}/AppDir/usr/"
 
@@ -81,7 +84,7 @@ export LD_LIBRARY_PATH=${QT_PATH}/lib
 
 echo "-- Generating AppDir for AppImage"
 if [ -z "$4" ]; then
-	./${WORK_DIR}/AppBin/linuxdeploy-x86_64.AppImage --appdir=${WORK_DIR}/AppDir -e ${WORK_DIR}/AppDir/usr/bin/${APP_NAME} --output appimage --desktop-file=${WORK_DIR}/AppDir/usr/share/applications/${APP_NAME}.desktop -i ${WORK_DIR}/AppDir/usr/share/icons/hicolor/scalable/apps/${APP_NAME}.svg --plugin qt
+	./${WORK_DIR}/AppBin/linuxdeploy-x86_64.AppImage --appimage-extract-and-run --appdir=${WORK_DIR}/AppDir -e ${WORK_DIR}/AppDir/usr/bin/${APP_NAME} --output appimage --desktop-file=${WORK_DIR}/AppDir/usr/share/applications/${APP_NAME}.desktop -i ${WORK_DIR}/AppDir/usr/share/icons/hicolor/scalable/apps/${APP_NAME}.svg --plugin qt
 else
 	if [ -f "${WORK_DIR}/AppBin/appimagetool-x86_64.AppImage" ]; then
 		echo "appimagetool-x86_64.AppImage exists"
@@ -89,11 +92,11 @@ else
 		wget -P "${WORK_DIR}/AppBin" https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage
 		chmod +x "${WORK_DIR}/AppBin/appimagetool-x86_64.AppImage"
 	fi
-	./${WORK_DIR}/AppBin/linuxdeploy-x86_64.AppImage --appdir=${WORK_DIR}/AppDir -e ${WORK_DIR}/AppDir/usr/bin/${APP_NAME} --desktop-file=${WORK_DIR}/AppDir/usr/share/applications/${APP_NAME}.desktop -i ${WORK_DIR}/AppDir/usr/share/icons/hicolor/scalable/apps/${APP_NAME}.svg --plugin qt
+	./${WORK_DIR}/AppBin/linuxdeploy-x86_64.AppImage --appimage-extract-and-run --appdir=${WORK_DIR}/AppDir -e ${WORK_DIR}/AppDir/usr/bin/${APP_NAME} --desktop-file=${WORK_DIR}/AppDir/usr/share/applications/${APP_NAME}.desktop -i ${WORK_DIR}/AppDir/usr/share/icons/hicolor/scalable/apps/${APP_NAME}.svg --plugin qt
 	#./linuxdeploy-x86_64.AppImage --appdir=${WORK_DIR}/ -e ${WORK_DIR}/app/bin/${APP_NAME} --output appimage --desktop-file=${WORK_DIR}/app/share/applications/${APP_NAME}.desktop -i ${WORK_DIR}/app/share/icons/hicolor/scalable/apps/${APP_NAME}.svg
 	echo "-- Code Signing of AppImage"
 	# APPIMAGETOOL_SIGN_PASSPHRASE has to the parent environment (not here). Do not use export.
-	./${WORK_DIR}/AppBin/appimagetool-x86_64.AppImage ${WORK_DIR}/AppDir --sign --sign-key $4
+	./${WORK_DIR}/AppBin/appimagetool-x86_64.AppImage --appimage-extract-and-run ${WORK_DIR}/AppDir --sign --sign-key $4
 fi
 
 mkdir -p "${BIN_SOURCE_DIR}/Packages"