diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2bca2fa28c..b6df2f6cbe 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,7 @@ jobs:
       JULIA_PKG_SERVER: ''
     steps:
       - name: Check out repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up Julia
         uses: julia-actions/setup-julia@v1
         with:
diff --git a/.github/workflows/ci_PR.yml b/.github/workflows/ci_PR.yml
index 984b18b4ed..f0e842af94 100644
--- a/.github/workflows/ci_PR.yml
+++ b/.github/workflows/ci_PR.yml
@@ -29,7 +29,7 @@ jobs:
       JULIA_PKG_SERVER: ''
     steps:
       - name: Check out repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up Julia
         uses: julia-actions/setup-julia@v1
         with:
diff --git a/.github/workflows/clean-gh-pages.yml b/.github/workflows/clean-gh-pages.yml
index 844c4c9a51..94b9f70ade 100644
--- a/.github/workflows/clean-gh-pages.yml
+++ b/.github/workflows/clean-gh-pages.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout gh-pages branch
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: gh-pages
       - name: Delete preview and history + push changes
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 23a66f623b..a9f31cbf89 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -20,7 +20,7 @@ jobs:
       JULIA_PKG_SERVER: ''
     steps:
       - name: Check out repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up Julia
         uses: julia-actions/setup-julia@latest
         with:
diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index ae70915c55..11bb716870 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -6,7 +6,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install JuliaFormatter and format
         run: |
           julia  -e 'import Pkg; Pkg.add("JuliaFormatter")'
diff --git a/.github/workflows/invalidations.yml b/.github/workflows/invalidations.yml
index ed4f352df0..96bd7922e7 100644
--- a/.github/workflows/invalidations.yml
+++ b/.github/workflows/invalidations.yml
@@ -24,12 +24,12 @@ jobs:
       with:
         version: '1'
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: julia-actions/julia-buildpkg@v1
     - uses: julia-actions/julia-invalidations@v1
       id: invs_pr
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         ref: ${{ github.event.repository.default_branch }}
     - uses: julia-actions/julia-buildpkg@v1