diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 1bae4be..75f7f15 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -25,7 +25,7 @@ jobs:
       matrix:
         target: [x86_64, x86, aarch64, armv7, s390x, ppc64le]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: '3.10'
@@ -48,7 +48,7 @@ jobs:
       matrix:
         target: [x64, x86]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: '3.10'
@@ -71,7 +71,7 @@ jobs:
       matrix:
         target: [x86_64, aarch64]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: '3.10'
@@ -90,7 +90,7 @@ jobs:
   sdist:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Build sdist
         uses: PyO3/maturin-action@v1
         with: