diff --git a/.github/workflows/YASG.yml b/.github/workflows/YASG.yml
index 5aee7b9..cbc3d59 100644
--- a/.github/workflows/YASG.yml
+++ b/.github/workflows/YASG.yml
@@ -27,7 +27,7 @@ jobs:
       - uses: julia-actions/setup-julia@latest
         with:
           version: ${{ matrix.julia-version }}
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - name: Instantiate `format` environment and format
         run: |
           julia --project=format -e 'using Pkg; Pkg.instantiate()'
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d1a83d9..1c7608c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,7 +30,7 @@ jobs:
           - x64
           # - x86
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/docs-cleanup.yml b/.github/workflows/docs-cleanup.yml
index e345652..6b36927 100644
--- a/.github/workflows/docs-cleanup.yml
+++ b/.github/workflows/docs-cleanup.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout gh-pages branch
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           ref: gh-pages
       - name: Delete preview and history + push changes
diff --git a/.github/workflows/documenter.yml b/.github/workflows/documenter.yml
index 22ace3f..57c3474 100644
--- a/.github/workflows/documenter.yml
+++ b/.github/workflows/documenter.yml
@@ -11,7 +11,7 @@ jobs:
     name: Documentation
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: 1.6