diff --git a/.github/workflows/crowdin_download.yml b/.github/workflows/crowdin_download.yml
index 9cdd81721f..f7bbc73622 100644
--- a/.github/workflows/crowdin_download.yml
+++ b/.github/workflows/crowdin_download.yml
@@ -20,7 +20,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Create empty source files
         run: |
           touch src/backend/locale/django.pot
@@ -48,7 +48,7 @@ jobs:
           CROWDIN_BASE_PATH: "../src/"
       # frontend i18n
       - name: Restore the frontend cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: "src/frontend/**/node_modules"
           key: front-node_modules-${{ hashFiles('src/frontend/**/yarn.lock') }}
diff --git a/.github/workflows/crowdin_upload.yml b/.github/workflows/crowdin_upload.yml
index 404e303273..3def89ea8d 100644
--- a/.github/workflows/crowdin_upload.yml
+++ b/.github/workflows/crowdin_upload.yml
@@ -20,10 +20,10 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       # Backend i18n
       - name: Install Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.13.3"
           cache: "pip"
@@ -33,7 +33,7 @@ jobs:
         run: pip install --user .
         working-directory: src/backend
       - name: Restore the mail templates
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         id: mail-templates
         with:
           path: "src/backend/core/templates/mail"
@@ -49,7 +49,7 @@ jobs:
           DJANGO_CONFIGURATION=Build python manage.py makemessages -a --keep-pot
       # frontend i18n
       - name: Restore the frontend cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: "src/frontend/**/node_modules"
           key: front-node_modules-${{ hashFiles('src/frontend/**/yarn.lock') }}
diff --git a/.github/workflows/dependencies.yml b/.github/workflows/dependencies.yml
index 9d21f81612..6cdf23f6e3 100644
--- a/.github/workflows/dependencies.yml
+++ b/.github/workflows/dependencies.yml
@@ -20,16 +20,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Restore the frontend cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         id: front-node_modules
         with:
           path: "src/frontend/**/node_modules"
           key: front-node_modules-${{ hashFiles('src/frontend/**/yarn.lock') }}
       - name: Setup Node.js
         if: steps.front-node_modules.outputs.cache-hit != 'true'
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ inputs.node_version }}
       - name: Install dependencies
@@ -37,7 +37,7 @@ jobs:
         run: cd src/frontend/ && yarn install --frozen-lockfile
       - name: Cache install frontend
         if: steps.front-node_modules.outputs.cache-hit != 'true'
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: "src/frontend/**/node_modules"
           key: front-node_modules-${{ hashFiles('src/frontend/**/yarn.lock') }}
@@ -50,10 +50,10 @@ jobs:
         working-directory: src/mail
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Restore the mail templates
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         id: mail-templates
         with:
           path: "src/backend/core/templates/mail"
@@ -61,7 +61,7 @@ jobs:
 
       - name: Setup Node.js
         if: steps.mail-templates.outputs.cache-hit != 'true'
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ inputs.node_version }}
 
@@ -79,7 +79,7 @@ jobs:
 
       - name: Cache mail templates
         if: steps.mail-templates.outputs.cache-hit != 'true'
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: "src/backend/core/templates/mail"
           key: mail-templates-${{ hashFiles('src/mail/mjml') }}
diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index 6a5007112e..00a299e5ef 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -44,7 +44,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
diff --git a/.github/workflows/ghcr.yml b/.github/workflows/ghcr.yml
index b0dc812ea8..b0bb2a92bf 100644
--- a/.github/workflows/ghcr.yml
+++ b/.github/workflows/ghcr.yml
@@ -22,7 +22,7 @@ jobs:
       packages: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
@@ -68,7 +68,7 @@ jobs:
       packages: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
@@ -117,7 +117,7 @@ jobs:
       packages: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
diff --git a/.github/workflows/helmfile-linter.yaml b/.github/workflows/helmfile-linter.yaml
index dcea93aef8..c598029f6a 100644
--- a/.github/workflows/helmfile-linter.yaml
+++ b/.github/workflows/helmfile-linter.yaml
@@ -15,7 +15,7 @@ jobs:
     steps:
     -
       name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     -
       name: Helmfile lint
       shell: bash
diff --git a/.github/workflows/impress-frontend.yml b/.github/workflows/impress-frontend.yml
index bb29b838c0..61b3f180e3 100644
--- a/.github/workflows/impress-frontend.yml
+++ b/.github/workflows/impress-frontend.yml
@@ -23,15 +23,15 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "22.x"
 
       - name: Restore the frontend cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: "src/frontend/**/node_modules"
           key: front-node_modules-${{ hashFiles('src/frontend/**/yarn.lock') }}
@@ -47,14 +47,14 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "22.x"
       - name: Restore the frontend cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: "src/frontend/**/node_modules"
           key: front-node_modules-${{ hashFiles('src/frontend/**/yarn.lock') }}
@@ -69,15 +69,15 @@ jobs:
     timeout-minutes: 20
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "22.x"
 
       - name: Restore the frontend cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: "src/frontend/**/node_modules"
           key: front-node_modules-${{ hashFiles('src/frontend/**/yarn.lock') }}
@@ -111,15 +111,15 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "22.x"
 
       - name: Restore the frontend cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: "src/frontend/**/node_modules"
           key: front-node_modules-${{ hashFiles('src/frontend/**/yarn.lock') }}
@@ -157,11 +157,11 @@ jobs:
       issues: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Detect relevant changes
         id: changes
-        uses: dorny/paths-filter@v2
+        uses: dorny/paths-filter@v3
         with:
           filters: |
             lock:
@@ -170,7 +170,7 @@ jobs:
               - 'src/frontend/apps/impress/**'
 
       - name: Restore the frontend cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: "src/frontend/**/node_modules"
           key: front-node_modules-${{ hashFiles('src/frontend/**/yarn.lock') }}
@@ -178,7 +178,7 @@ jobs:
 
       - name: Setup Node.js
         if: steps.changes.outputs.lock == 'true' || steps.changes.outputs.app == 'true'
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "22.x"
 
@@ -205,14 +205,14 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "22.x"
       - name: Restore the frontend cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: "src/frontend/**/node_modules"
           key: front-node_modules-${{ hashFiles('src/frontend/**/yarn.lock') }}
diff --git a/.github/workflows/impress.yml b/.github/workflows/impress.yml
index a329496d48..6e0d23bf00 100644
--- a/.github/workflows/impress.yml
+++ b/.github/workflows/impress.yml
@@ -19,7 +19,7 @@ jobs:
     if: github.event_name == 'pull_request' # Makes sense only for pull requests
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: show
@@ -46,7 +46,7 @@ jobs:
       github.event_name == 'pull_request'
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 50
       - name: Check that the CHANGELOG has been modified in the current branch
@@ -56,7 +56,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Check CHANGELOG max line length
         run: |
           max_line_length=$(cat CHANGELOG.md | grep -Ev "^\[.*\]: https://github.com" | wc -L)
@@ -70,7 +70,7 @@ jobs:
     if: github.event_name == 'pull_request'
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install codespell
         run: pip install --user codespell
       - name: Check for typos
@@ -92,9 +92,9 @@ jobs:
         working-directory: src/backend
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.13.3"
           cache: "pip"
@@ -146,7 +146,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Create writable /data
         run: |
@@ -154,7 +154,7 @@ jobs:
           sudo mkdir -p /data/static
 
       - name: Restore the mail templates
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         id: mail-templates
         with:
           path: "src/backend/core/templates/mail"
@@ -190,7 +190,7 @@ jobs:
             mc version enable impress/impress-media-storage"
 
       - name: Install Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.13.3"
           cache: "pip"
diff --git a/.github/workflows/release-helm-chart.yaml b/.github/workflows/release-helm-chart.yaml
index 3a01ff19b2..693552e1c3 100644
--- a/.github/workflows/release-helm-chart.yaml
+++ b/.github/workflows/release-helm-chart.yaml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0