diff --git a/.github/workflows/build_doc.yml b/.github/workflows/build_doc.yml
index 85158cfc285..b629c1870cf 100644
--- a/.github/workflows/build_doc.yml
+++ b/.github/workflows/build_doc.yml
@@ -60,7 +60,7 @@ jobs:
               content: 'rocket'
             })
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         name: "checkout branch"
         if: steps.get_round.outputs.result != 'stop'
         with:
diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 0af6e276e6e..78d96aa94db 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: install dependencies
       run: |
         .github/install.sh
diff --git a/.github/workflows/cmake-all.yml b/.github/workflows/cmake-all.yml
index d0507b4d430..b9e7226c62d 100644
--- a/.github/workflows/cmake-all.yml
+++ b/.github/workflows/cmake-all.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: install dependencies
       run: sudo apt-get install -y libboost-dev libboost-program-options-dev libmpfr-dev libeigen3-dev
     - name: configure all
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: install dependencies
       run: sudo bash -e .github/install.sh
     - name: configure all
diff --git a/.github/workflows/delete_doc.yml b/.github/workflows/delete_doc.yml
index 38f5ab445ac..0910e74ef3b 100644
--- a/.github/workflows/delete_doc.yml
+++ b/.github/workflows/delete_doc.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: delete directory
       run: |
          set -x
diff --git a/.github/workflows/demo.yml b/.github/workflows/demo.yml
index 123458ebe04..a98dfba56b8 100644
--- a/.github/workflows/demo.yml
+++ b/.github/workflows/demo.yml
@@ -9,7 +9,7 @@ jobs:
   batch_1:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: install dependencies
       run: .github/install.sh
     - name: run1
@@ -17,7 +17,7 @@ jobs:
   batch_2:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: install dependencies
       run: .github/install.sh
     - name: run2
@@ -25,7 +25,7 @@ jobs:
   batch_3:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: install dependencies
       run: .github/install.sh
     - name: run3
@@ -33,7 +33,7 @@ jobs:
   batch_4:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: install dependencies
       run: .github/install.sh
     - name: run4
diff --git a/.github/workflows/list_workflow_last_run.yml b/.github/workflows/list_workflow_last_run.yml
index 79b1d2c0634..d12b758e62b 100644
--- a/.github/workflows/list_workflow_last_run.yml
+++ b/.github/workflows/list_workflow_last_run.yml
@@ -12,7 +12,7 @@
         messages: ${{ steps.cat_output.outputs.message }}
       steps:
         - name: checkout
-          uses: actions/checkout@v3
+          uses: actions/checkout@v4
         - name: run script
           run: |
             chmod +x ./Scripts/developer_scripts/list_cgal_workflows_last_run.sh
diff --git a/.github/workflows/reuse.yml b/.github/workflows/reuse.yml
index 8b0bba4260e..c55ba6df40d 100644
--- a/.github/workflows/reuse.yml
+++ b/.github/workflows/reuse.yml
@@ -10,7 +10,7 @@ jobs:
   reuse:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: REUSE version
       uses: fsfe/reuse-action@v2
       with: