diff --git a/README.md b/README.md
index c5a18105399..81d1b95ed51 100644
--- a/README.md
+++ b/README.md
@@ -106,7 +106,7 @@ jobs:
     runs-on: ubuntu-latest  # windows-latest || macos-latest
     name: Test changed-files
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0  # OR "2" -> To retrieve the preceding commit.
 
@@ -251,7 +251,7 @@ jobs:
     runs-on: ubuntu-latest  # windows-latest || macos-latest
     name: Test changed-files
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0  # OR "2" -> To retrieve the preceding commit.
 
@@ -690,7 +690,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -723,7 +723,7 @@ See [inputs](#inputs) for more information.
 ```yaml
 ...
     - name: Checkout into dir1
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
         path: dir1