diff --git a/.github/workflows/api_reference_refresh.yml b/.github/workflows/api_reference_refresh.yml
index ceab6c17..e7562bf2 100644
--- a/.github/workflows/api_reference_refresh.yml
+++ b/.github/workflows/api_reference_refresh.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-      - uses: actions/checkout@v3.0.2
+      - uses: actions/checkout@v4.2.2
       
       - name: Set up JDK
         uses: actions/setup-java@v3.5.0
diff --git a/.github/workflows/firebase_test_lab.yml b/.github/workflows/firebase_test_lab.yml
index f8bc29a5..93f80875 100644
--- a/.github/workflows/firebase_test_lab.yml
+++ b/.github/workflows/firebase_test_lab.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       # 1
-      - uses: actions/checkout@v3.0.2
+      - uses: actions/checkout@v4.2.2
       - name: set up JDK 1.8
         uses: actions/setup-java@v3.5.0
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 604978cb..0cbb3ddb 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-18.04
     steps:
       - name: "📥 Check-out"
-        uses: actions/checkout@v3.0.2
+        uses: actions/checkout@v4.2.2
       - name: set up JDK 1.8
         uses: actions/setup-java@v3.5.0
         with:
diff --git a/.github/workflows/reviewdog.yml b/.github/workflows/reviewdog.yml
index 7dabe9c8..68cc9ca9 100644
--- a/.github/workflows/reviewdog.yml
+++ b/.github/workflows/reviewdog.yml
@@ -8,7 +8,7 @@ jobs:
 
     steps:
       - name: Clone repo
-        uses: actions/checkout@v3.0.2
+        uses: actions/checkout@v4.2.2
         with:
           fetch-depth: 1
           ref: ${{ github.head_ref }}
diff --git a/.github/workflows/scheduled_unit_test.yml b/.github/workflows/scheduled_unit_test.yml
index 7eaf3a51..2f414e1d 100644
--- a/.github/workflows/scheduled_unit_test.yml
+++ b/.github/workflows/scheduled_unit_test.yml
@@ -9,7 +9,7 @@ jobs:
   unit_tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3.0.2
+      - uses: actions/checkout@v4.2.2
       - name: set up JDK 1.8
         uses: actions/setup-java@v3.5.0
         with:
diff --git a/.github/workflows/unit_test_on_push.yml b/.github/workflows/unit_test_on_push.yml
index eb53f316..b3cd542e 100644
--- a/.github/workflows/unit_test_on_push.yml
+++ b/.github/workflows/unit_test_on_push.yml
@@ -12,7 +12,7 @@ jobs:
   unit_tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3.0.2
+      - uses: actions/checkout@v4.2.2
       - name: set up JDK 1.8
         uses: actions/setup-java@v3.5.0
         with: