diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 004b472..27e59ff 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -8,7 +8,7 @@ jobs:
     # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#choosing-github-hosted-runners
     runs-on: ${{ matrix.os }}
     timeout-minutes: 10
-    name: fast test on OS ${{ matrix.os }}
+    name: fast CI on OS ${{ matrix.os }}
     strategy:
       matrix:
         os: [ ubuntu-latest, windows-latest ]
@@ -18,85 +18,85 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: setup Java 17
+      - name: Setup Java 17
         uses: actions/setup-java@v3
         with:
           java-version: 17
           distribution: temurin
           # only first java setup need enable cache
           cache: maven
-      - name: build and test with Java 17 without agents
+      - name: Build and test with Java 17 without agents
         run: ./mvnw -V --no-transfer-progress clean install
-      - name: test under hello and world agents
+      - name: Test under hello and world agents
         run: ./mvnw dependency:properties surefire:test
         env:
           STUDY_AGENT_RUN_MODE: hello-and-world-agents
-      - name: test under hello agent
+      - name: Test under hello agent
         run: ./mvnw dependency:properties surefire:test
         env:
           STUDY_AGENT_RUN_MODE: only-hello-agent
           STUDY_AGENT_ENABLE_CLASS_LOG: true
-      - name: test under hello agent twice
+      - name: Test under hello agent twice
         run: ./mvnw dependency:properties surefire:test
         env:
           STUDY_AGENT_RUN_MODE: only-hello-agent-twice
-      - name: run Main without agents
+      - name: Run Main without agents
         run: ./mvnw dependency:properties exec:exec -pl main-runner
-      - name: run Main under hello and world agents
+      - name: Run Main under hello and world agents
         run: ./mvnw dependency:properties exec:exec -pl main-runner
         env:
           STUDY_AGENT_RUN_MODE: hello-and-world-agents
-      - name: run Main under hello agent
+      - name: Run Main under hello agent
         run: ./mvnw dependency:properties exec:exec -pl main-runner
         env:
           STUDY_AGENT_RUN_MODE: only-hello-agent
           STUDY_AGENT_ENABLE_CLASS_LOG: true
-      - name: run Main under hello agent twice
+      - name: Run Main under hello agent twice
         run: ./mvnw dependency:properties exec:exec -pl main-runner
         env:
           STUDY_AGENT_RUN_MODE: only-hello-agent-twice
 
-      - name: setup Java 8
+      - name: Setup Java 8
         uses: actions/setup-java@v3
         with:
           java-version: 8
           distribution: zulu
-      - name: test with Java 8 without agents
+      - name: Test with Java 8 without agents
         run: ./mvnw -V --no-transfer-progress dependency:properties surefire:test
-      - name: test under hello and world agents
+      - name: Test under hello and world agents
         run: ./mvnw dependency:properties surefire:test
         env:
           STUDY_AGENT_RUN_MODE: hello-and-world-agents
-      - name: test under hello agent
+      - name: Test under hello agent
         run: ./mvnw dependency:properties surefire:test
         env:
           STUDY_AGENT_RUN_MODE: only-hello-agent
           STUDY_AGENT_ENABLE_CLASS_LOG: true
-      - name: test under hello agent twice
+      - name: Test under hello agent twice
         run: ./mvnw dependency:properties surefire:test
         env:
           STUDY_AGENT_RUN_MODE: only-hello-agent-twice
-      - name: run Main without agents
+      - name: Run Main without agents
         run: ./mvnw dependency:properties exec:exec -pl main-runner
-      - name: run Main under hello and world agents
+      - name: Run Main under hello and world agents
         run: ./mvnw dependency:properties exec:exec -pl main-runner
         env:
           STUDY_AGENT_RUN_MODE: hello-and-world-agents
-      - name: run Main under hello agent
+      - name: Run Main under hello agent
         run: ./mvnw dependency:properties exec:exec -pl main-runner
         env:
           STUDY_AGENT_RUN_MODE: only-hello-agent
           STUDY_AGENT_ENABLE_CLASS_LOG: true
-      - name: run Main under hello agent twice
+      - name: Run Main under hello agent twice
         run: ./mvnw dependency:properties exec:exec -pl main-runner
         env:
           STUDY_AGENT_RUN_MODE: only-hello-agent-twice
 
-      - name: 'remove self maven install files(OS: *nix)'
+      - name: 'Remove self maven install files(OS: *nix)'
         run: rm -rf $HOME/.m2/repository/io/foldright/study*
         # https://docs.github.com/en/actions/learn-github-actions/expressions
         # https://docs.github.com/en/actions/learn-github-actions/variables#detecting-the-operating-system
         if: runner.os != 'Windows'
-      - name: 'remove self maven install files(OS: Windows)'
+      - name: 'Remove self maven install files(OS: Windows)'
         run: Remove-Item -Recurse -Force $home/.m2/repository/io/foldright/study*
         if: runner.os == 'Windows'
diff --git a/.github/workflows/strong_ci.yaml b/.github/workflows/strong_ci.yaml
index 043871f..a36dc72 100644
--- a/.github/workflows/strong_ci.yaml
+++ b/.github/workflows/strong_ci.yaml
@@ -8,50 +8,40 @@ 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
         with:
           submodules: recursive
 
-      - name: setup Java 8
+      - name: Setup Java 8
         uses: actions/setup-java@v3
         with:
           java-version: 8
           distribution: zulu
           # only first java setup need enable cache
           cache: maven
-      - name: setup Java 11
+      - name: Setup Java 11
         uses: actions/setup-java@v3
         with:
           java-version: 11
           distribution: microsoft
-      - name: setup Java 17
+      - name: Setup Java 17
         uses: actions/setup-java@v3
         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
+      - name: Setup Java 21
         uses: actions/setup-java@v3
         with:
           java-version: 21
           distribution: zulu
 
-      - run: scripts/integration_test.sh
-        env:
-          JAVA8_HOME: ${{ env.JAVA_HOME_8_X64 }}
-          JAVA11_HOME: ${{ env.JAVA_HOME_11_X64 }}
-          JAVA17_HOME: ${{ env.JAVA_HOME_17_X64 }}
-          JAVA20_HOME: ${{ env.JAVA_HOME_20_X64 }}
-          JAVA21_HOME: ${{ env.JAVA_HOME_21_X64 }}
+      - name: Run integration test
+        run: scripts/integration_test.sh
 
-      - name: remove self maven install files
+      - name: Remove self maven install files
         run: rm -rf $HOME/.m2/repository/io/foldright/study*
 
       - name: Upload coverage reports to Codecov
diff --git a/scripts/bash-buddy b/scripts/bash-buddy
index d53f561..57958e4 160000
--- a/scripts/bash-buddy
+++ b/scripts/bash-buddy
@@ -1 +1 @@
-Subproject commit d53f56109ae97028ff70264491eec7b1a4ba1a6b
+Subproject commit 57958e4f10f0fbf51318109dee8c4e7cf2de4738
diff --git a/scripts/integration_test.sh b/scripts/integration_test.sh
index 3efdfb7..5f857a5 100755
--- a/scripts/integration_test.sh
+++ b/scripts/integration_test.sh
@@ -19,7 +19,6 @@ readonly JDK_VERSIONS=(
   8
   11
   "$default_build_jdk_version"
-  20
   21
 )
 
@@ -54,8 +53,7 @@ mvu::mvn_cmd clean install
 # about CI env var
 #   https://docs.github.com/en/actions/learn-github-actions/variables#default-environment-variables
 if [ "${CI:-}" = true ]; then
-  CI_MORE_BEGIN_OPTS=jacoco:prepare-agent
-  CI_MORE_END_OPTS=jacoco:report
+  CI_MORE_BEGIN_OPTS=jacoco:prepare-agent CI_MORE_END_OPTS=jacoco:report
 fi
 
 for jdk_version in "${JDK_VERSIONS[@]}"; do