diff --git a/.github/actions/cmake/action.yml b/.github/actions/cmake/action.yml
index 35a55a76a..c8c670226 100644
--- a/.github/actions/cmake/action.yml
+++ b/.github/actions/cmake/action.yml
@@ -23,7 +23,7 @@ runs:
     # Linux deps
     - name: Install/cache clazy, ninja, openldap, doctest, and Qt's dependencies
       if: runner.os != 'Windows'
-      uses: awalsh128/cache-apt-pkgs-action@v1.3.0
+      uses: awalsh128/cache-apt-pkgs-action@v1.4.1
       with:
         packages: ninja-build doctest-dev libgl1-mesa-dev libpulse-dev libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-shape0 libxcb-util1 libxcb-xinerama0 libxkbcommon-x11-0 libldap-dev clazy
         version: 1.0
@@ -52,7 +52,7 @@ runs:
         modules: ${{ inputs.modules }}
 
     - name: ccache
-      uses: hendrikmuhs/ccache-action@v1.2
+      uses: hendrikmuhs/ccache-action@v1.2.12
       with:
         key: ${{ github.job }}
 
diff --git a/.github/actions/run-linter/action.yml b/.github/actions/run-linter/action.yml
index 5fea408c6..85993f64f 100644
--- a/.github/actions/run-linter/action.yml
+++ b/.github/actions/run-linter/action.yml
@@ -10,7 +10,7 @@ runs:
   steps:
     - uses: ./.github/actions/cmake
       with:
-        qt_version: 6.5.0
+        qt_version: 6.5.3
         use_qt6: ON
         modules: qtserialport qtwebsockets
         additional_cmake_args: -DCMAKE_GLOBAL_AUTOGEN_TARGET=ON -DCMAKE_AUTOGEN_ORIGIN_DEPENDS=OFF
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index d408be5d6..9b6b4529c 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -19,7 +19,7 @@ jobs:
       CC: clang-15
       CXX: clang++-15
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: true
 
@@ -35,7 +35,7 @@ jobs:
       CC: clang-15
       CXX: clang++-15
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: true
 
diff --git a/.github/workflows/lupdate.yml b/.github/workflows/lupdate.yml
new file mode 100644
index 000000000..f3478767c
--- /dev/null
+++ b/.github/workflows/lupdate.yml
@@ -0,0 +1,36 @@
+# vim: sw=2
+name: lupdate
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  ubuntu-qt6:
+    name: Qt 6.5.3 / Ubuntu 22.04
+    runs-on: ubuntu-22.04
+    env:
+      LIBSHV_RUN_LUPDATE: 1
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Setup CMake
+        uses: ./.github/actions/cmake
+        with:
+          qt_version: 6.5.3
+          use_qt6: ON
+          modules: qtserialport qtwebsockets
+
+      - name: Refresh translation files
+        run: cmake --build '${{github.workspace}}/build' --target update_translations
+
+      - name: Check changes
+        run: git diff --exit-code
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 736dec6bc..448eb0dcf 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,7 @@ jobs:
       CFLAGS: -fsanitize=address,undefined
       CXXFLAGS: -fsanitize=address,undefined
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: true
 
@@ -34,20 +34,20 @@ jobs:
         uses: ./.github/actions/build-and-test
 
   ubuntu-qt6:
-    name: Qt 6.5.0 / Ubuntu 22.04
+    name: Qt 6.5.3 / Ubuntu 22.04
     runs-on: ubuntu-22.04
     env:
       CFLAGS: -fsanitize=address,undefined
       CXXFLAGS: -fsanitize=address,undefined
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: true
 
       - name: Setup CMake
         uses: ./.github/actions/cmake
         with:
-          qt_version: 6.5.0
+          qt_version: 6.5.3
           use_qt6: ON
           modules: qtserialport qtwebsockets
 
@@ -55,17 +55,17 @@ jobs:
         uses: ./.github/actions/build-and-test
 
   windows:
-    name: Qt 6.5.0 / Windows
+    name: Qt 6.5.3 / Windows
     runs-on: windows-2022
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: true
 
       - name: Setup CMake
         uses: ./.github/actions/cmake
         with:
-          qt_version: 6.5.0
+          qt_version: 6.5.3
           qt_arch: win64_mingw
           use_qt6: ON
           modules: qtserialport qtwebsockets
@@ -81,7 +81,7 @@ jobs:
     name: Qt 6.6.2 / NixOS
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: true
       - name: Install Nix