diff --git a/.github/workflows/.firebase/build-and-deploy.yml b/.github/workflows/.firebase/build-and-deploy.yml
index 56e6ca4..815a64c 100644
--- a/.github/workflows/.firebase/build-and-deploy.yml
+++ b/.github/workflows/.firebase/build-and-deploy.yml
@@ -32,7 +32,7 @@ jobs:
         id: remote_repo
 
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           ref: ${{ github.ref }}
 
diff --git a/.github/workflows/build-and-deploy.yml b/.github/workflows/build-and-deploy.yml
index b55aeb7..84b37eb 100644
--- a/.github/workflows/build-and-deploy.yml
+++ b/.github/workflows/build-and-deploy.yml
@@ -31,7 +31,7 @@ jobs:
         id: remote_repo
 
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: ${{ github.ref }}
 
diff --git a/.github/workflows/optimize-and-merge.yml b/.github/workflows/optimize-and-merge.yml
index 9bb72ad..bfe94a6 100644
--- a/.github/workflows/optimize-and-merge.yml
+++ b/.github/workflows/optimize-and-merge.yml
@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Optimize with Calibre's image actions
         uses: calibreapp/image-actions@main
diff --git a/.github/workflows/update-views.yml b/.github/workflows/update-views.yml
index ab9a47c..02f1b80 100644
--- a/.github/workflows/update-views.yml
+++ b/.github/workflows/update-views.yml
@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: master
           fetch-depth: 0