diff --git a/.github/workflows/cache.yml b/.github/workflows/cache.yml
index 38f32205..f968aa65 100644
--- a/.github/workflows/cache.yml
+++ b/.github/workflows/cache.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Setup Anaconda
         uses: conda-incubator/setup-miniconda@v3
         with:
diff --git a/.github/workflows/linkcheck.yml b/.github/workflows/linkcheck.yml
index a8d1c9f3..2756bf1e 100644
--- a/.github/workflows/linkcheck.yml
+++ b/.github/workflows/linkcheck.yml
@@ -16,7 +16,7 @@ jobs:
         python-version: ["3.11"]
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Setup Anaconda
         uses: conda-incubator/setup-miniconda@v3
         with:
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 1a450884..1c5b4277 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Setup Anaconda
         uses: conda-incubator/setup-miniconda@v3
         with: