diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index b706a4fd0..1391b6015 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -21,7 +21,7 @@ jobs:
         arch:
           - x64
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/CI_ecosystem.yml b/.github/workflows/CI_ecosystem.yml
index 88159fd00..6071e3adf 100644
--- a/.github/workflows/CI_ecosystem.yml
+++ b/.github/workflows/CI_ecosystem.yml
@@ -27,7 +27,7 @@ jobs:
         arch:
           - x64
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/CI_extended.yml b/.github/workflows/CI_extended.yml
index c3e7561a2..f28413f17 100644
--- a/.github/workflows/CI_extended.yml
+++ b/.github/workflows/CI_extended.yml
@@ -27,7 +27,7 @@ jobs:
         arch:
           - x64
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 4164c3683..96798fc0a 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -14,7 +14,7 @@ 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/preview-documentation.yml b/.github/workflows/preview-documentation.yml
index 29373527b..2b4253a39 100644
--- a/.github/workflows/preview-documentation.yml
+++ b/.github/workflows/preview-documentation.yml
@@ -13,7 +13,7 @@ jobs:
     if:  startsWith(github.head_ref, 'documentation/')
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'