diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a155745..2d6aa48 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,7 +10,7 @@ jobs:
       matrix:
         ruby: [ '3.0', '3.1', '3.2', '3.3' ]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install gcc and gfortran
       run: sudo apt-get install -y gcc gfortran
     - name: Set up Ruby ${{ matrix.ruby }}