diff --git a/README.md b/README.md
index 4e0c2dd..cb31bd9 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,7 @@ jobs:
     name: Formatting Check
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Run clang-format style check for C/C++/Protobuf programs.
       uses: jidicula/clang-format-action@v4.9.0
       with:
@@ -109,7 +109,7 @@ jobs:
           - 'src'
           - 'examples'
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Run clang-format style check for C/C++/Protobuf programs.
       uses: jidicula/clang-format-action@v4.9.0
       with:
@@ -136,7 +136,7 @@ jobs:
           - check: 'examples'
             exclude: ''              # Nothing to exclude
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Run clang-format style check for C/C++/Protobuf programs.
       uses: jidicula/clang-format-action@v4.9.0
       with: