diff --git a/.github/workflows/backend-tests.yml b/.github/workflows/backend-tests.yml
index 0d47a43..86bf734 100644
--- a/.github/workflows/backend-tests.yml
+++ b/.github/workflows/backend-tests.yml
@@ -22,12 +22,12 @@ jobs:
           sudo apt install -y --no-install-recommends libreoffice libreoffice-pdfimport
       -
         name: Install etherpad core
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: ether/etherpad-lite
       -
         name: Checkout plugin repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: ./node_modules/__tmp
       -
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index ec932e4..d850ecb 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2
diff --git a/.github/workflows/frontend-tests.yml b/.github/workflows/frontend-tests.yml
index 5ba9f99..e38579c 100644
--- a/.github/workflows/frontend-tests.yml
+++ b/.github/workflows/frontend-tests.yml
@@ -18,7 +18,7 @@ jobs:
           printf %s\\n '::set-output name=tunnel_id::${{ github.run_id }}-${{ github.run_number }}-${{ github.job }}'
       -
         name: Check out Etherpad core
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: ether/etherpad-lite
       -
@@ -33,7 +33,7 @@ jobs:
         name: Install legacy npm for correct dependency resolution
       -
         name: Check out the plugin
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: ./node_modules/__tmp
       -
diff --git a/.github/workflows/npmpublish.yml b/.github/workflows/npmpublish.yml
index ae88186..1d774d5 100644
--- a/.github/workflows/npmpublish.yml
+++ b/.github/workflows/npmpublish.yml
@@ -22,7 +22,7 @@ jobs:
       # conflicts with this plugin's clone, etherpad-lite must be cloned and
       # moved out before this plugin's repo is cloned to $GITHUB_WORKSPACE.
       -
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: ether/etherpad-lite
           path: etherpad-lite
@@ -31,7 +31,7 @@ jobs:
       # etherpad-lite has been moved outside of $GITHUB_WORKSPACE, so it is now
       # safe to clone this plugin's repo to $GITHUB_WORKSPACE.
       -
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       # This is necessary for actions/setup-node because '..' can't be used in
       # cache-dependency-path.
       -
@@ -79,7 +79,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       -
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       -