diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 12342f9..e549596 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -13,3 +13,7 @@ updates:
     directory: "/auto-pipeline-examples"
     schedule:
       interval: "daily"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ecb16d9..0f3ce27 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,14 +18,14 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-20.04, windows-2022 ]
-        java: [ 8, 20 ]
+        java: [ 8, 21 ]
       fail-fast: false
       max-parallel: 32
-    name: Test JDK ${{ matrix.java }}, ${{ matrix.os }}
+    name: CI on JDK ${{ matrix.java }} OS ${{ matrix.os }}
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-java@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
         with:
           distribution: zulu
           java-version: ${{ matrix.java }}
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index d2deb6d..708cf9e 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -10,7 +10,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
     - name: Install mdbook
diff --git a/.github/workflows/strong-ci.yml b/.github/workflows/strong-ci.yml
index 21cca0d..8f547c3 100644
--- a/.github/workflows/strong-ci.yml
+++ b/.github/workflows/strong-ci.yml
@@ -19,39 +19,34 @@ jobs:
     # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#choosing-github-hosted-runners
     runs-on: ubuntu-latest
     timeout-minutes: 15
-    name: test by multiply java versions
+    name: CI by multiply java versions
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
 
       - name: setup Java 8
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: 8
           distribution: zulu
           # only first java setup need enable cache
           cache: maven
       - name: setup Java 11
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: 11
           distribution: microsoft
       - name: setup Java 17
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: 17
           distribution: microsoft
-      - name: setup Java 20
-        uses: actions/setup-java@v3
-        with:
-          java-version: 20
-          distribution: zulu
       - name: setup Java 21
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
-          java-version: 21-ea
+          java-version: 21
           distribution: zulu
 
       - run: scripts/integration_test