diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b4382c9..b5778b1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -26,16 +26,16 @@ jobs:
         use_c2a: ['USE_C2A=OFF', 'USE_C2A=ON']
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: checkout the submodules
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: recursive
 
       - name: checkout C2A-AOBC-EXAMPLE
         if: contains(matrix.use_c2a, 'ON')
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: c2a-aobc-example
           repository: ut-issl/c2a-aobc-example
@@ -109,16 +109,16 @@ jobs:
         use_c2a: ['USE_C2A=OFF', 'USE_C2A=ON']
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: checkout the submodules
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: recursive
 
       - name: checkout C2A-AOBC-EXAMPLE
         if: contains(matrix.use_c2a, 'ON')
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: c2a-aobc-example
           repository: ut-issl/c2a-aobc-example