diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..ee47f6c
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,13 @@
+version: 2
+updates:
+  # GitHub Actions (checkout, codeql-action, upload-artifact, etc.)
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+      day: "monday"
+      time: "04:00"
+    open-pull-requests-limit: 5
+    commit-message:
+      prefix: "ci"
+      include: "scope"
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f357139..9a55c44 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -5,7 +5,7 @@ on:
     branches:
       - main
       - master
-      
+       
   workflow_dispatch:
 
 env:
@@ -17,7 +17,7 @@ jobs:
     runs-on: windows-latest
     
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Install Qt
         uses: jurplel/install-qt-action@v4
         with:
@@ -35,7 +35,7 @@ jobs:
           cmake -A x64 -DCMAKE_CONFIGURATION_TYPES="Release" -DCMAKE_PREFIX_PATH="$env:QT_ROOT_DIR" ..
           cmake --build . --config Release
           & "$env:QT_ROOT_DIR\bin\windeployqt.exe" --no-translations --no-compiler-runtime --no-svg ".\build\Release\RcloneBrowser.exe"
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: windows
           path: build\build\Release\*
@@ -48,7 +48,7 @@ jobs:
     runs-on: windows-11-arm
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Install Qt (ARM64)
         uses: jurplel/install-qt-action@v4
         with:
@@ -66,7 +66,7 @@ jobs:
           cmake -A ARM64 -DCMAKE_CONFIGURATION_TYPES="Release" -DCMAKE_PREFIX_PATH="$env:QT_ROOT_DIR" ..
           cmake --build . --config Release
           & "$env:QT_ROOT_DIR\bin\windeployqt.exe" --no-translations --no-compiler-runtime --no-svg ".\build\Release\RcloneBrowser.exe"
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: windows-arm64
           path: build\build\Release\*
@@ -80,7 +80,7 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Install Qt
         uses: jurplel/install-qt-action@v4
@@ -141,7 +141,7 @@ jobs:
           mkdir -p build/build
           mv ./*.AppImage "build/build/rclone-browser-${VERSION}-linux-x86_64.AppImage"
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
          name: linux
          path: build/build/*.AppImage
@@ -151,7 +151,7 @@ jobs:
     runs-on: macos-latest
     
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Install Qt
         uses: jurplel/install-qt-action@v4
         with:
@@ -170,7 +170,7 @@ jobs:
           cd build
           "$QT_ROOT_DIR/bin/macdeployqt" rclone-browser.app -executable="rclone-browser.app/Contents/MacOS/rclone-browser"
           mv rclone-browser.app Rclone\ Browser.app
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: macos
           path: build/build/*
@@ -180,7 +180,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Install Development Tools and Build Rclone Browser
         uses: vmactions/freebsd-vm@v1
         with:
@@ -195,7 +195,7 @@ jobs:
             cmake ..
             make
             
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: freebsd
           path: build/build/*
@@ -206,10 +206,10 @@ jobs:
     needs: [build_windows, build_windows_arm64, build_linux, build_macos, build_freebsd]
     
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Create artifact directory
         run: rm -rf /tmp/artifacts && mkdir /tmp/artifacts
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v8
         with:
           path: /tmp/artifacts
       - name: Compress artifacts
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
new file mode 100644
index 0000000..e962901
--- /dev/null
+++ b/.github/workflows/codeql.yml
@@ -0,0 +1,55 @@
+name: "CodeQL"
+
+on:
+  # push:
+  #   branches: [ "master" ]
+  # pull_request:
+  #   branches: [ "master" ]
+  # schedule:
+  #   # einmal wöchentlich, unabhängig von Pushes/PRs (findet neue Advisories
+  #   # für bereits vorhandene Codepfade, ohne dass sich der Code ändert)
+  #   - cron: "23 4 * * 1"
+  workflow_dispatch: {}
+    # ermöglicht manuellen Start über Actions-Tab -> "Run workflow",
+    # unabhängig davon ob schedule/cron aktiv ist oder auskommentiert wurde
+
+jobs:
+  analyze:
+    name: Analyze (cpp)
+    runs-on: ubuntu-latest
+    permissions:
+      # Für das Hochladen der Ergebnisse in den "Security" Tab benötigt
+      security-events: write
+      packages: read
+      actions: read
+      contents: read
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v7
+
+      - name: Install build dependencies
+        run: |
+          sudo apt update
+          sudo apt -y install git g++ cmake make qt6-base-dev qt6-multimedia-dev libgl1-mesa-dev
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v4
+        with:
+          languages: cpp
+          # manueller Build-Mode: CodeQL beobachtet passiv den Build-Prozess
+          # unten (Tracing), statt selbst zu raten, wie CMake+Qt6 zu bauen ist
+          build-mode: manual
+          # queries: security-extended   # optional: mehr Checks, mehr False Positives
+          # queries: security-and-quality  # optional: noch mehr Checks, mehr False Positives
+
+      - name: Build (CMake, Debian/Ubuntu path)
+        run: |
+          mkdir build && cd build
+          cmake ..
+          make -j"$(nproc)"
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v4
+        with:
+          category: "/language:cpp"