diff --git a/.github/workflows/Documentation.yml b/.github/workflows/Documentation.yml
index 5575279..50a758f 100644
--- a/.github/workflows/Documentation.yml
+++ b/.github/workflows/Documentation.yml
@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6977623..3c59dd2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,7 +31,7 @@ jobs:
             arch: x64
             allow_failure: true
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/format_pr.yml b/.github/workflows/format_pr.yml
index 30c056e..9ded2dc 100644
--- a/.github/workflows/format_pr.yml
+++ b/.github/workflows/format_pr.yml
@@ -9,7 +9,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install JuliaFormatter and format
         run: |
           julia  -e 'import Pkg; Pkg.add("JuliaFormatter")'