diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fef6fdf..1f2e765 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -74,18 +74,20 @@ stages:
         GROUP: 8
       - DISTRO: 'opensuse 15'
         GROUP: 9
-      - DISTRO: 'fedora 42'
+      - DISTRO: 'opensuse 16'
         GROUP: 10
-      - DISTRO: 'fedora 43'
+      - DISTRO: 'fedora 42'
         GROUP: 11
-      - DISTRO: 'alpine 318'
+      - DISTRO: 'fedora 43'
         GROUP: 12
-      - DISTRO: 'alpine 319'
+      - DISTRO: 'alpine 318'
         GROUP: 13
-      - DISTRO: 'alpine 320'
+      - DISTRO: 'alpine 319'
         GROUP: 14
-      - DISTRO: 'alpine 321'
+      - DISTRO: 'alpine 320'
         GROUP: 15
+      - DISTRO: 'alpine 321'
+        GROUP: 16
 
 default:
   retry: 2
diff --git a/builder/build-rpm-inside-docker b/builder/build-rpm-inside-docker
index 69cf978..75ab7c4 100755
--- a/builder/build-rpm-inside-docker
+++ b/builder/build-rpm-inside-docker
@@ -5,6 +5,7 @@ set -e
 prepare_build_env() {
   rpmdev-setuptree
   copy_spec_and_tar_with_binaries
+  copy_rpmlintrc
 }
 
 copy_spec_and_tar_with_binaries() {
@@ -13,11 +14,27 @@ copy_spec_and_tar_with_binaries() {
     ~/rpmbuild/SOURCES/
 }
 
+copy_rpmlintrc() {
+  cp /src/builder/rpmlintrc ~/.rpmlintrc
+}
+
+is_rpmlint_toml_config() {
+  rpmlint --version | grep -qF 2.
+}
+
 copy_rpm_to_build_dir() {
   cd /src/builder && \
     mkdir -p "$os_dir" && cp ~/rpmbuild/RPMS/*/*.rpm ${os_dir}
 }
 
+rpmlint_with_config_loaded() {
+  rpmlint -c ~/.rpmlintrc "$os_dir"/*.rpm
+}
+
+rpmlint_without_config_loaded() {
+  rpmlint "$os_dir"/*.rpm
+}
+
 cd "$(dirname "$0")/.."
 
 if [ -z ${KASMVNC_BUILD_OS_CODENAME+x} ]; then
@@ -32,4 +49,9 @@ os_dir="build/${os}_${os_codename}"
 prepare_build_env
 rpmbuild -ba ~/rpmbuild/SPECS/*.spec
 copy_rpm_to_build_dir
-rpmlint "$os_dir"/*.rpm || true
+
+if is_rpmlint_toml_config; then
+  rpmlint_with_config_loaded || true
+else
+  rpmlint_without_config_loaded || true
+fi
diff --git a/builder/build.sh b/builder/build.sh
index 24d66c0..80b40b7 100755
--- a/builder/build.sh
+++ b/builder/build.sh
@@ -2,10 +2,21 @@
 
 set -e
 
-detect_quilt() {
-  if which quilt 1>/dev/null; then
-    QUILT_PRESENT=1
-    export QUILT_PATCHES=debian/patches
+debian_patches_dir="debian/patches"
+
+is_debian_patches_present() {
+  [[ -d "$debian_patches_dir" ]]
+}
+
+is_debian() {
+  [[ -f /usr/bin/dpkg ]]
+}
+
+apply_debian_patches() {
+  if is_debian_patches_present; then
+    export QUILT_PATCHES="$debian_patches_dir"
+    quilt push -a
+    echo 'Patches applied!'
   fi
 }
 
@@ -148,10 +159,8 @@ else
 fi
 cd /src
 
-detect_quilt
-if [ -n "$QUILT_PRESENT" ]; then
-  quilt push -a
-  echo 'Patches applied!'
+if is_debian; then
+  apply_debian_patches
 fi
 
 make servertarball
diff --git a/builder/dockerfile.opensuse_15.barebones.rpm.test b/builder/dockerfile.opensuse_15.barebones.rpm.test
index fa4f435..07a9f97 100644
--- a/builder/dockerfile.opensuse_15.barebones.rpm.test
+++ b/builder/dockerfile.opensuse_15.barebones.rpm.test
@@ -1,4 +1,4 @@
-FROM opensuse/leap:15.5
+FROM opensuse/leap:15.6
 
 ENV STARTUPDIR=/dockerstartup
 
diff --git a/builder/dockerfile.opensuse_15.build b/builder/dockerfile.opensuse_15.build
index 57f81e1..c7685f3 100644
--- a/builder/dockerfile.opensuse_15.build
+++ b/builder/dockerfile.opensuse_15.build
@@ -1,4 +1,4 @@
-FROM opensuse/leap:15.5
+FROM opensuse/leap:15.6
 
 ENV KASMVNC_BUILD_OS opensuse
 ENV KASMVNC_BUILD_OS_CODENAME 15
diff --git a/builder/dockerfile.opensuse_15.rpm.build b/builder/dockerfile.opensuse_15.rpm.build
index 35670c4..591c54f 100644
--- a/builder/dockerfile.opensuse_15.rpm.build
+++ b/builder/dockerfile.opensuse_15.rpm.build
@@ -1,4 +1,4 @@
-FROM opensuse/leap:15.5
+FROM opensuse/leap:15.6
 
 ENV KASMVNC_BUILD_OS opensuse
 ENV KASMVNC_BUILD_OS_CODENAME 15
@@ -16,7 +16,7 @@ RUN zypper -n install -y \
 
 # Cache repo updates, so that spec changes don't trigger it on every build.
 RUN zypper refresh
-COPY opensuse/*.spec /tmp
+COPY opensuse/kasmvncserver.spec /tmp
 
 RUN zypper -n install $(grep BuildRequires /tmp/*.spec | cut -d' ' -f2 | xargs)
 
diff --git a/builder/dockerfile.opensuse_16.barebones.rpm.test b/builder/dockerfile.opensuse_16.barebones.rpm.test
new file mode 100644
index 0000000..04316cd
--- /dev/null
+++ b/builder/dockerfile.opensuse_16.barebones.rpm.test
@@ -0,0 +1,24 @@
+FROM opensuse/leap:16.0
+
+ENV STARTUPDIR=/dockerstartup
+
+# base tools
+ARG RUN_TEST
+RUN [ "$RUN_TEST" = 1 ] || zypper -n install -y \
+  less \
+  vim \
+  xterm
+
+# Cache repo updates, so that package changes don't trigger it on every build.
+RUN zypper refresh
+ARG KASMVNC_PACKAGE_DIR
+COPY $KASMVNC_PACKAGE_DIR/*.rpm /tmp
+RUN zypper install -y --allow-unsigned-rpm /tmp/*.rpm
+
+RUN mkdir -p $STARTUPDIR
+COPY builder/startup/vnc_startup_barebones.sh $STARTUPDIR
+
+RUN useradd -m foo
+USER foo:kasmvnc-cert
+
+ENTRYPOINT "/$STARTUPDIR/vnc_startup_barebones.sh"
diff --git a/builder/dockerfile.opensuse_16.build b/builder/dockerfile.opensuse_16.build
new file mode 100644
index 0000000..201d780
--- /dev/null
+++ b/builder/dockerfile.opensuse_16.build
@@ -0,0 +1,67 @@
+FROM opensuse/leap:16.0
+
+ENV KASMVNC_BUILD_OS opensuse
+ENV KASMVNC_BUILD_OS_CODENAME 16
+ENV XORG_VER 21.1.15
+
+# Install depends
+RUN zypper install -ny \
+  bdftopcf \
+  ninja \
+  nasm \
+  curl \
+  ffmpeg-4-libavcodec-devel \
+  ffmpeg-4-libswscale-devel \
+  ffmpeg-4-libavformat-devel \
+  fonttosfnt \
+  font-util \
+  gcc15 \
+  gcc15-c++ \
+  cmake \
+  giflib-devel \
+  git \
+  gzip \
+  libbz2-devel \
+  libgbm-devel \
+  libgnutls-devel \
+  libopenssl-devel \
+  libpng16-devel \
+  libpnglite0 \
+  png++-devel \
+  libtiff-devel \
+  libXfont2-devel \
+  libxkbcommon-x11-devel \
+  libxshmfence-devel \
+  make \
+  Mesa-dri \
+  Mesa-libglapi-devel \
+  Mesa-libGL-devel \
+  mkfontscale \
+  patch \
+  tigervnc \
+  wget \
+  libXcursor-devel \
+  libXrandr-devel \
+  libXtst-devel \
+  libX11-devel \
+  xorgproto-devel \
+  xorg-x11-util-devel \
+  xorg-x11-server-sdk \
+  xorg-x11-util-devel \
+  zlib-devel
+
+RUN useradd -u 1000 docker && \
+  usermod -a -G docker docker
+
+ENV SCRIPTS_DIR=/tmp/scripts
+ENV CC=/usr/bin/gcc-15
+ENV CXX=/usr/bin/g++-15
+ENV PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig:/usr/local/lib/pkgconfig
+
+COPY builder/scripts $SCRIPTS_DIR
+RUN $SCRIPTS_DIR/build-deps.sh
+
+COPY --chown=docker:docker . /src/
+
+USER docker
+ENTRYPOINT ["bash", "-l", "-c", "/src/builder/build.sh"]
diff --git a/builder/dockerfile.opensuse_16.rpm.build b/builder/dockerfile.opensuse_16.rpm.build
new file mode 100644
index 0000000..578f913
--- /dev/null
+++ b/builder/dockerfile.opensuse_16.rpm.build
@@ -0,0 +1,26 @@
+FROM opensuse/leap:16.0
+
+ENV KASMVNC_BUILD_OS opensuse
+ENV KASMVNC_BUILD_OS_CODENAME 16
+
+RUN zypper -n install -y \
+  gpg* \
+  less \
+  lsb-release \
+  rng-tools \
+  rpm-build \
+  rpmdevtools \
+  rpmlint \
+  tree \
+  vim
+
+# Cache repo updates, so that spec changes don't trigger it on every build.
+RUN zypper refresh
+COPY opensuse/kasmvncserver16.spec /tmp
+
+RUN zypper -n install $(grep BuildRequires /tmp/*.spec | cut -d' ' -f2 | xargs)
+
+RUN useradd -u 1000 -m -d /home/docker docker && \
+  usermod -a -G docker docker
+
+USER docker
diff --git a/builder/rpmlintrc b/builder/rpmlintrc
new file mode 100644
index 0000000..932bb78
--- /dev/null
+++ b/builder/rpmlintrc
@@ -0,0 +1,4 @@
+[Filters]
+# Locale JSON files are intentionally duplicated per language/region.
+files-duplicate = true
+files-duplicated-waste = true
diff --git a/debian/patches/fix-kasmvncserver-perl-hashbang.patch b/debian/patches/fix-kasmvncserver-perl-hashbang.patch
deleted file mode 100644
index 4fa9c69..0000000
--- a/debian/patches/fix-kasmvncserver-perl-hashbang.patch
+++ /dev/null
@@ -1,10 +0,0 @@
-Description: Lintian complains about #!/usr/bin/env perl.
-Author: Dmitry Maksyoma <ledestin@gmail.com>
---- a/unix/vncserver
-+++ b/unix/vncserver
-@@ -1,4 +1,4 @@
--#!/usr/bin/env perl
-+#!/usr/bin/perl
- #
- #  Copyright (C) 2009-2010 D. R. Commander.  All Rights Reserved.
- #  Copyright (C) 2005-2006 Sun Microsystems, Inc.  All Rights Reserved.
diff --git a/debian/patches/series b/debian/patches/series
deleted file mode 100644
index 7312ab9..0000000
--- a/debian/patches/series
+++ /dev/null
@@ -1 +0,0 @@
-fix-kasmvncserver-perl-hashbang.patch
diff --git a/opensuse/kasmvncserver.spec b/opensuse/kasmvncserver.spec
index b9ba2f8..4e276b5 100644
--- a/opensuse/kasmvncserver.spec
+++ b/opensuse/kasmvncserver.spec
@@ -3,7 +3,7 @@ Version:        1.3.4
 Release:        leap15
 Summary:        VNC server accessible from a web browser
 
-License: GPLv2+
+License: GPL-2.0-or-later
 URL: https://github.com/kasmtech/KasmVNC
 
 BuildRequires: rsync
diff --git a/opensuse/kasmvncserver16.spec b/opensuse/kasmvncserver16.spec
new file mode 100644
index 0000000..342d148
--- /dev/null
+++ b/opensuse/kasmvncserver16.spec
@@ -0,0 +1,203 @@
+Name:           kasmvncserver
+Version:        1.3.4
+Release:        leap16
+Summary:        VNC server accessible from a web browser
+
+License: GPL-2.0-or-later
+URL: https://github.com/kasmtech/KasmVNC
+
+BuildRequires: rsync
+Requires: xauth, hostname, libxkbcommon-x11-0, xkeyboard-config, x11-tools, openssl, perl, libpixman-1-0, libjpeg8, libgomp1, libXfont2-2, libXdmcp6, libglvnd, xkbcomp, perl-Switch, perl-YAML-Tiny, perl-Hash-Merge-Simple, perl-Scalar-List-Utils, perl-List-MoreUtils, perl-Try-Tiny, perl-DateTime, perl-DateTime-TimeZone, libgbm1, libxshmfence1
+Conflicts: tigervnc, tigervnc-x11vnc
+
+%description
+KasmVNC provides remote web-based access to a Desktop or application.
+While VNC is in the name, KasmVNC differs from other VNC variants such
+as TigerVNC, RealVNC, and TurboVNC. KasmVNC has broken from the RFB
+specification which defines VNC, in order to support modern technologies
+and increase security. KasmVNC is accessed by users from any modern
+browser and does not support legacy VNC viewer applications. KasmVNC
+uses a modern YAML based configuration at the server and user level,
+allowing for ease of management. KasmVNC is maintained by Kasm
+Technologies Corp, www.kasmweb.com.
+
+%prep
+
+%install
+rm -rf $RPM_BUILD_ROOT
+
+TARGET_OS=$KASMVNC_BUILD_OS
+TARGET_OS_CODENAME=$KASMVNC_BUILD_OS_CODENAME
+TARBALL=$RPM_SOURCE_DIR/kasmvnc.${TARGET_OS}_${TARGET_OS_CODENAME}.tar.gz
+TAR_DATA=$(mktemp -d)
+tar -xzf "$TARBALL" -C "$TAR_DATA"
+
+SRC=$TAR_DATA/usr/local
+SRC_BIN=$SRC/bin
+DESTDIR=$RPM_BUILD_ROOT
+DST_MAN=$DESTDIR/usr/share/man/man1
+SSL_CERT_DIR=/usr/share/pki/trust/anchors
+
+mkdir -p $DESTDIR/usr/bin $DESTDIR/usr/share/man/man1 \
+  $DESTDIR/usr/share/doc/kasmvncserver $DESTDIR/usr/lib \
+  $DESTDIR/%perl_vendorlib $DESTDIR/etc/kasmvnc
+cp $SRC_BIN/Xvnc $DESTDIR/usr/bin;
+cp $SRC_BIN/vncserver $DESTDIR/usr/bin;
+cp -a $SRC_BIN/KasmVNC $DESTDIR/%perl_vendorlib
+cp $SRC_BIN/vncconfig $DESTDIR/usr/bin;
+cp $SRC_BIN/kasmvncpasswd $DESTDIR/usr/bin;
+cp $SRC_BIN/kasmxproxy $DESTDIR/usr/bin;
+cp -r $SRC/lib/kasmvnc/ $DESTDIR/usr/lib/kasmvncserver
+cp -r $SRC/lib/systemd/ $DESTDIR/usr/lib/
+cd $DESTDIR/usr/bin && ln -s kasmvncpasswd vncpasswd;
+cp -r $SRC/share/doc/kasmvnc*/* $DESTDIR/usr/share/doc/kasmvncserver/
+rsync -r --links --safe-links --exclude '.git*' --exclude po2js --exclude xgettext-html \
+  --exclude www/utils/ --exclude .eslintrc --exclude configure \
+  $SRC/share/kasmvnc $DESTDIR/usr/share
+
+sed -i -e 's!pem_certificate: .\+$!pem_certificate: '$SSL_CERT_DIR'/kasmvnc.pem!' \
+    $DESTDIR/usr/share/kasmvnc/kasmvnc_defaults.yaml
+sed -i -e 's!pem_key: .\+$!pem_key: '$SSL_CERT_DIR'/kasmvnc.pem!' \
+    $DESTDIR/usr/share/kasmvnc/kasmvnc_defaults.yaml
+sed -e 's/^\([^#]\)/# \1/' $DESTDIR/usr/share/kasmvnc/kasmvnc_defaults.yaml > \
+  $DESTDIR/etc/kasmvnc/kasmvnc.yaml
+cp $SRC/man/man1/Xvnc.1 $DESTDIR/usr/share/man/man1/;
+cp $SRC/share/man/man1/vncserver.1 $DST_MAN;
+cp $SRC/share/man/man1/vncconfig.1 $DST_MAN;
+cp $SRC/share/man/man1/vncpasswd.1 $DST_MAN;
+cp $SRC/share/man/man1/kasmxproxy.1 $DST_MAN;
+cd $DST_MAN && ln -s vncpasswd.1 kasmvncpasswd.1;
+
+%preun
+stop_vncserver_systemd_services_for_all_logged_in_users() {
+  for session in $(list_user_sessions); do
+    stop_user_services "$session"
+  done
+}
+
+list_user_sessions() {
+  loginctl list-sessions --no-legend | awk '{print $1}'
+}
+
+stop_user_services() {
+  local session="$1"
+
+  for service in $(list_active_services); do
+    systemctl --user --machine=$(systemd_user_from_session "$session") stop "$service" || true
+  done
+}
+
+systemd_user_from_session() {
+  local session="$1"
+
+  echo $(loginctl show-session "$session" -p Name --value)@
+}
+
+list_active_services() {
+  systemctl --user --machine=$(systemd_user_from_session "$session") \
+    list-units --type=service --state=active --plain --no-legend | \
+    awk '{ print $1 }' | grep kasmvncserver
+}
+
+stop_vncserver_systemd_services_for_all_logged_in_users
+
+%files
+%config(noreplace) /etc/kasmvnc
+
+/usr/bin/*
+/usr/lib/kasmvncserver
+/usr/lib/systemd/user/kasmvncserver@.service
+/usr/share/man/man1/*
+%perl_vendorlib/KasmVNC
+/usr/share/kasmvnc
+
+%license /usr/share/doc/kasmvncserver/LICENSE.TXT
+%doc /usr/share/doc/kasmvncserver/README.md
+
+%changelog
+* Thu Mar 20 2025 KasmTech <info@kasmweb.com> - 1.3.4-leap15
+- Add configuration key network.udp.payload_size.
+- Remove support for distro versions that reached end-of-life.
+- Add missing dependency on hostname.
+- Remove webpack to reduce security vulnerabilities.
+- Special characters in filenames are now properly escaped, preventing invalid JSON.
+* Fri Oct 25 2024 KasmTech <info@kasmweb.com> - 1.3.3-1
+- Allow disabling IP blacklist
+- Downloads API for detailed file downloads information
+* Tue Sep 24 2024 KasmTech <info@kasmweb.com> - 1.3.2-1
+- Disable seamless clipboard on Firefox by default, due to the Firefox overlaying a Paste menu over the canvas.
+- Fixed CVE-2024-38449, directory traversal bug in built-in web server.
+- Allow for larger header sizes, up to 16k. Provide better logging and handling for requests that contain HTTP headers that are larger than the 16k limit.
+- Fixed memory leak in kasmproxy.
+- Fixed mime types of downloads to ensure the browser interprets them as downloads.
+* Tue Mar 12 2024 KasmTech <info@kasmweb.com> - 1.3.1-1
+- Fix exception thrown on Firefox 124 and higher
+- Fix artifacts on high resolution secondary screens
+- Fixes for touch support on primary and secondary screens
+- Fix for Oculus keyboard input
+* Mon Feb 05 2024 KasmTech <info@kasmweb.com> - 1.3.0-1
+- Multi-monitor support.
+- Increased performance with watermark enabled.
+- Added support for Fedora 39 and Alpine 319.
+- Allow special characters in usernames.
+- Better logging of client settings when client connects or changes settings.
+- Add support for rotation of text-based watermark.
+* Fri Aug 25 2023 KasmTech <info@kasmweb.com> - 1.2.0-leap15
+- Add support for Unix relays for bidirectional communication between noVNC
+  and containerized applications.
+- Text based watermark overlays with date and time support.
+- New builds for Bookworm, Alpine 3.18, and Fedora 38.
+- Multi-language support.
+- Add support for rendering pixmaps via DRI3 GPU acceleration allowing
+  compositing and other 3d accelerated workloads in a KasmVNC session.
+- Fix crash that can occur.
+- Fixed tearing when compositing is enabled with DRI3 hardware acceleration.
+- Fix stuck command key on MacOS clients.
+* Wed Apr 05 2023 KasmTech <info@kasmweb.com> - 1.1.0-leap15
+- Upstream release
+* Tue Nov 29 2022 KasmTech <info@kasmweb.com> - 1.0.0-leap15
+- WebRTC UDP transit support with support of STUN servers
+- Lossless compression using multi-threaded WASM QOI decoder client side
+- New yaml based configuration
+- Significantly improved FPS through both client-side and server-side improvements.
+- Support for the admin to define arbitrary http response headers for the built in web server
+- Support for additional mouse buttons
+- Refinement of vncserver checks and user prompts
+- Added send_full_frame to developer API, forces full frame to be sent to all connected users that have at least read permission.
+* Tue Mar 22 2022 KasmTech <info@kasmweb.com> - 0.9.3~beta-1
+* Fri Feb 12 2021 KasmTech <info@kasmweb.com> - 0.9.1~beta-1
+- Initial release of the rpm package.
+
+%post
+  kasmvnc_group="kasmvnc-cert"
+
+  create_kasmvnc_group() {
+    if ! getent group "$kasmvnc_group" >/dev/null; then
+	    groupadd --system "$kasmvnc_group"
+    fi
+  }
+
+  make_self_signed_certificate() {
+    local cert_file="/usr/share/pki/trust/anchors/kasmvnc.pem"
+    [ -f "$cert_file" ] && return 0
+
+    openssl req -x509 -nodes -days 3650 -newkey rsa:2048 \
+      -keyout "$cert_file" \
+      -out "$cert_file" -subj \
+      "/C=US/ST=VA/L=None/O=None/OU=DoFu/CN=kasm/emailAddress=none@none.none"
+    chgrp "$kasmvnc_group" "$cert_file"
+    chmod 640 "$cert_file"
+  }
+
+  create_kasmvnc_group
+  make_self_signed_certificate
+
+%postun
+  is_uninstall=0
+
+  if [ "$1" == 0 ]; then
+    is_uninstall=1
+  fi
+  if [ "$is_uninstall" = 1 ]; then
+    rm -f /usr/share/pki/trust/anchors/kasmvnc.pem
+  fi
diff --git a/unix/vncserver b/unix/vncserver
index 09543e2..5a4410b 100755
--- a/unix/vncserver
+++ b/unix/vncserver
@@ -1,4 +1,4 @@
-#!/usr/bin/env perl
+#!/usr/bin/perl
 #
 #  Copyright (C) 2009-2010 D. R. Commander.  All Rights Reserved.
 #  Copyright (C) 2005-2006 Sun Microsystems, Inc.  All Rights Reserved.