diff --git a/.github/workflows/build_docs.yml b/.github/workflows/build_docs.yml
index 492a8e9d..7e670bc2 100644
--- a/.github/workflows/build_docs.yml
+++ b/.github/workflows/build_docs.yml
@@ -18,7 +18,7 @@ jobs:
     steps:
     - name: Checkout
       # see https://github.com/actions/checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     - name: Set up JDK
       # see https://github.com/actions/setup-java
       uses: actions/setup-java@v4
@@ -43,7 +43,7 @@ jobs:
     steps:
     - name: Checkout
       # see https://github.com/actions/checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     - name: Setup Python Environment
       # see https://github.com/actions/setup-python
       uses: actions/setup-python@v5
@@ -67,7 +67,7 @@ jobs:
     steps:
     - name: Checkout
       # see https://github.com/actions/checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     - name: Generate Schema documentation
       run: ./gen.sh
     - name: Archive Schema documentation
diff --git a/.github/workflows/test_java.yml b/.github/workflows/test_java.yml
index dfbcc784..6cd758bd 100644
--- a/.github/workflows/test_java.yml
+++ b/.github/workflows/test_java.yml
@@ -20,7 +20,7 @@ jobs:
     steps:
     - name: Checkout
       # see https://github.com/actions/checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     - name: Set up JDK
       # see https://github.com/actions/setup-java
       uses: actions/setup-java@v4
diff --git a/.github/workflows/test_js.yml b/.github/workflows/test_js.yml
index 4502b200..bfcb8767 100644
--- a/.github/workflows/test_js.yml
+++ b/.github/workflows/test_js.yml
@@ -23,7 +23,7 @@ jobs:
     steps:
       - name: Checkout
         # see https://github.com/actions/checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Setup Node.js
         # see https://github.com/actions/setup-node
         uses: actions/setup-node@v4
diff --git a/.github/workflows/test_php.yml b/.github/workflows/test_php.yml
index 498acebf..24ff8d2b 100644
--- a/.github/workflows/test_php.yml
+++ b/.github/workflows/test_php.yml
@@ -23,7 +23,7 @@ jobs:
     steps:
       - name: Checkout
         # see https://github.com/actions/checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Setup PHP
         # see https://github.com/shivammathur/setup-php
         uses: shivammathur/setup-php@v2
diff --git a/.github/workflows/test_proto.yml b/.github/workflows/test_proto.yml
index 0dfe8cae..d33e4c28 100644
--- a/.github/workflows/test_proto.yml
+++ b/.github/workflows/test_proto.yml
@@ -23,6 +23,6 @@ jobs:
     steps:
       - name: Checkout
         # see https://github.com/actions/checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Run test
         run: ./test.sh