diff --git a/.github/workflows/build_wheels.yml b/.github/workflows/build_wheels.yml
index 582d4fc1c..cec6925fb 100644
--- a/.github/workflows/build_wheels.yml
+++ b/.github/workflows/build_wheels.yml
@@ -41,7 +41,7 @@ jobs:
 
     steps:
       - name: Checkout scikit-tree
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - uses: actions/setup-python@v4.6.1
         with:
@@ -94,7 +94,7 @@ jobs:
     
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python
         uses: actions/setup-python@v4.6.1
@@ -126,7 +126,7 @@ jobs:
 
     steps:
       - name: Checkout scikit-tree
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup Python
         uses: actions/setup-python@v4
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ec4df78d8..a329c4362 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -42,7 +42,7 @@ jobs:
       FORCE_SUBMODULE: True
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4.6.1
@@ -150,7 +150,7 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/')
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4.6.1
         with:
@@ -193,7 +193,7 @@ jobs:
     #   runs-on: windows-2019
     #   steps:
     #     - name: Checkout
-    #       uses: actions/checkout@v3
+    #       uses: actions/checkout@v4
     #       with:
     #         submodules: recursive
   
diff --git a/.github/workflows/pr_checks.yml b/.github/workflows/pr_checks.yml
index ec708e85b..f5eb59166 100644
--- a/.github/workflows/pr_checks.yml
+++ b/.github/workflows/pr_checks.yml
@@ -22,7 +22,7 @@ jobs:
         run: |
           echo "PR_NUMBER=${{ github.event.pull_request.number }}" >> $GITHUB_ENV
           echo "TAGGED_MILESTONE=${{ github.event.pull_request.milestone.title }}" >> $GITHUB_ENV
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: "0"
       - name: Check that CHANGELOG has been updated
diff --git a/.github/workflows/style.yml b/.github/workflows/style.yml
index ea0aa809a..11fe84b81 100644
--- a/.github/workflows/style.yml
+++ b/.github/workflows/style.yml
@@ -31,7 +31,7 @@ jobs:
         poetry-version: [1.3.0]
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Python 3.10
         uses: actions/setup-python@v4.6.1
         with: