diff --git a/.github/workflows/build-deploy-doxygen.yml b/.github/workflows/build-deploy-doxygen.yml
index 56441915..09c64016 100644
--- a/.github/workflows/build-deploy-doxygen.yml
+++ b/.github/workflows/build-deploy-doxygen.yml
@@ -19,7 +19,7 @@ jobs:
 
     steps:
     - name: Get repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Installing build dependencies
       run: |
diff --git a/.github/workflows/build-doxygen.yml b/.github/workflows/build-doxygen.yml
index f65a51d3..ed091363 100644
--- a/.github/workflows/build-doxygen.yml
+++ b/.github/workflows/build-doxygen.yml
@@ -21,7 +21,7 @@ jobs:
 
     steps:
     - name: Get repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Installing build dependencies
       run: |
diff --git a/.github/workflows/get-gtest-codecov.yml b/.github/workflows/get-gtest-codecov.yml
index 191e9964..473e08a8 100644
--- a/.github/workflows/get-gtest-codecov.yml
+++ b/.github/workflows/get-gtest-codecov.yml
@@ -26,7 +26,7 @@ jobs:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install Ninja
       run: sudo apt-get install ninja-build
     - uses: r-lib/actions/setup-r@v2
diff --git a/.github/workflows/pr-checklist.yml b/.github/workflows/pr-checklist.yml
index 6f258dfd..d37dd731 100644
--- a/.github/workflows/pr-checklist.yml
+++ b/.github/workflows/pr-checklist.yml
@@ -10,7 +10,7 @@ jobs:
     name: pr-checklist
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: 'Comment PR'
         uses: actions/github-script@0.3.0
         if: github.event_name == 'pull_request'
diff --git a/.github/workflows/run-clang-format.yml b/.github/workflows/run-clang-format.yml
index 9fa64b65..966e5d57 100644
--- a/.github/workflows/run-clang-format.yml
+++ b/.github/workflows/run-clang-format.yml
@@ -23,7 +23,7 @@ jobs:
     # Format hpp and cpp files under inst/include, src/, and test/gtest
     # We use Google style to format code.
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: DoozyX/clang-format-lint-action@v0.14
       with:
         source: './inst/include ./src ./tests/gtest'
diff --git a/.github/workflows/run-clang-tidy.yml b/.github/workflows/run-clang-tidy.yml
index de72920e..08351218 100644
--- a/.github/workflows/run-clang-tidy.yml
+++ b/.github/workflows/run-clang-tidy.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: install clang-tidy
       run: sudo apt update && sudo apt -y install clang-tidy
diff --git a/.github/workflows/run-googletest.yml b/.github/workflows/run-googletest.yml
index 97897b1f..67da5a4f 100644
--- a/.github/workflows/run-googletest.yml
+++ b/.github/workflows/run-googletest.yml
@@ -19,7 +19,7 @@ jobs:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install Ninja
       shell: bash
       run: ${{ runner.os == 'macOS' && 'brew install ninja' || runner.os == 'Windows' && 'choco install ninja' || 'sudo apt-get install ninja-build' }}