diff --git a/.github/workflows/book.yml b/.github/workflows/book.yml
index e30b83f6..a6d24ed8 100644
--- a/.github/workflows/book.yml
+++ b/.github/workflows/book.yml
@@ -15,7 +15,7 @@ jobs:
       image: nim65s/cargo-binstall:mdbook
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Build
         run: mdbook build
       - uses: actions/upload-pages-artifact@v2
diff --git a/.github/workflows/packaging.yml b/.github/workflows/packaging.yml
index 9b9aae1e..e7f977f3 100644
--- a/.github/workflows/packaging.yml
+++ b/.github/workflows/packaging.yml
@@ -9,7 +9,7 @@ jobs:
       matrix:
         python-version: ["3.8", "3.9", "3.10", "3.11"]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}