diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 30db68e..44e5254 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: msrv
       run: |
         msrv=$(cargo metadata --no-deps --format-version 1 |
@@ -34,7 +34,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: msrv
       run: |
         msrv=$(cargo metadata --no-deps --format-version 1 |
@@ -58,7 +58,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: toolchain
       uses: dtolnay/rust-toolchain@master
       with: