diff --git a/.github/workflows/analyze.yaml b/.github/workflows/analyze.yaml
index 2778c4bdb..1fb61f8e1 100644
--- a/.github/workflows/analyze.yaml
+++ b/.github/workflows/analyze.yaml
@@ -1,19 +1,24 @@
 name: analyze
-on: [push]
+on:
+  push:
+    branches:
+      - unstable
 jobs:
   build:
     runs-on: rtx6000-4x
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: configure
         run: |
           cd lib && ./configure --enable-sm80 --disable-openmp && cd ..
       - name: analyze
         run: |
-          cd lib && scan-build -o ../_analyze --use-cc clang make
+          cd lib && scan-build -o ../_analyze --use-cc clang make -j 32
       - name: upload report
         run: |
           cd _analyze
           FILE=$(ls)
-          mv $FILE /var/public_html/analyze/$FILE
+          mv $FILE /var/www/public_html/analyze/$FILE
           echo "View [$FILE](https://ci.libccv.org/analyze/$FILE)" >> $GITHUB_STEP_SUMMARY
diff --git a/.github/workflows/coverage.yaml b/.github/workflows/coverage.yaml
index a0be126ea..195021882 100644
--- a/.github/workflows/coverage.yaml
+++ b/.github/workflows/coverage.yaml
@@ -1,10 +1,15 @@
 name: coverage
-on: [push]
+on:
+  push:
+    branches:
+      - unstable
 jobs:
   build:
     runs-on: rtx6000-4x
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: configure & build
         run: |
           cd lib && ./configure --enable-sm80 && cd ..
@@ -19,5 +24,6 @@ jobs:
         run: |
           cd _coverage
           FILE=$(ls)
-          mv $FILE /var/public_html/coverage/$FILE
+          chmod -R go+r $FILE
+          mv $FILE /var/www/public_html/coverage/$FILE
           echo "View [$FILE](https://ci.libccv.org/coverage/$FILE)" >> $GITHUB_STEP_SUMMARY
diff --git a/.github/workflows/cuda-int-tests.yaml b/.github/workflows/cuda-int-tests.yaml
index 755bd9731..48df3a331 100644
--- a/.github/workflows/cuda-int-tests.yaml
+++ b/.github/workflows/cuda-int-tests.yaml
@@ -1,10 +1,15 @@
 name: cuda-int-tests
-on: [push]
+on:
+  push:
+    branches:
+      - unstable
 jobs:
   build:
     runs-on: rtx6000-4x
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: configure & build
         run: |
           cd lib && ./configure --enable-sm80 && cd ..
diff --git a/.github/workflows/macos-arm-unit-tests.yaml b/.github/workflows/macos-arm-unit-tests.yaml
index 5b48f05df..6daa25f2a 100644
--- a/.github/workflows/macos-arm-unit-tests.yaml
+++ b/.github/workflows/macos-arm-unit-tests.yaml
@@ -4,7 +4,9 @@ jobs:
   build:
     runs-on: mac-mini-m2
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: configure & build
         run: |
           cd lib && ./configure --enable-mps && cd ..
diff --git a/.github/workflows/macos-unit-tests.yaml b/.github/workflows/macos-unit-tests.yaml
index 3553d7877..fd48ea77a 100644
--- a/.github/workflows/macos-unit-tests.yaml
+++ b/.github/workflows/macos-unit-tests.yaml
@@ -4,7 +4,9 @@ jobs:
   build:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: Install libjpeg and libpng
         run: |
           brew install libjpeg libpng
diff --git a/.github/workflows/raspberrypi-4-unit-tests.yaml b/.github/workflows/raspberrypi-4-unit-tests.yaml
index ab9dde048..160c60fe3 100644
--- a/.github/workflows/raspberrypi-4-unit-tests.yaml
+++ b/.github/workflows/raspberrypi-4-unit-tests.yaml
@@ -4,7 +4,9 @@ jobs:
   build:
     runs-on: raspberrypi-4
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: configure & build
         run: |
           cd lib && ./configure --enable-neon --with-arch=armv7 && cd ..
diff --git a/.github/workflows/ubsan-unit-tests.yaml b/.github/workflows/ubsan-unit-tests.yaml
index 21cb5b7de..b6fffe4cd 100644
--- a/.github/workflows/ubsan-unit-tests.yaml
+++ b/.github/workflows/ubsan-unit-tests.yaml
@@ -1,10 +1,15 @@
 name: ubsan-unit-tests
-on: [push]
+on:
+  push:
+    branches:
+      - unstable
 jobs:
   build:
     runs-on: rtx6000-4x
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: configure & build
         run: |
           cd lib && ./configure --enable-sm80 && cd ..
diff --git a/.github/workflows/ubuntu-unit-tests.yaml b/.github/workflows/ubuntu-unit-tests.yaml
index 8ad7d4c6f..25cbc41b4 100644
--- a/.github/workflows/ubuntu-unit-tests.yaml
+++ b/.github/workflows/ubuntu-unit-tests.yaml
@@ -4,7 +4,9 @@ jobs:
   build:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - run: sudo apt -y install libpng-dev libjpeg-dev libatlas-base-dev libblas-dev libgsl-dev clang
       - run: |
           cd lib && ./configure --disable-openmp && cd ..
diff --git a/README.rst b/README.rst
index 4245f390a..1e3297a87 100644
--- a/README.rst
+++ b/README.rst
@@ -5,6 +5,8 @@ Build Status
 -  Linux x64: |Build Status on Linux| |Build Status on Linux CUDA|
 -  Mac ARM64: |Build Status on Mac ARM64|
 -  Raspberry Pi 4: |Build Status on Raspberry Pi 4|
+-  Clang Analyzer: |Analyze Run|
+-  Test Coverage: |Coverage Run|
 
 Backstory
 ---------
@@ -44,11 +46,15 @@ ccv's data models and documentations are distributed under Creative Commons Attr
    :target: https://github.com/liuliu/ccv/actions/workflows/ubuntu-unit-tests.yaml?query=branch%3Aunstable
 .. |Build Status on GitHub macOS| image:: https://github.com/liuliu/ccv/actions/workflows/macos-unit-tests.yaml/badge.svg?branch=unstable
    :target: https://github.com/liuliu/ccv/actions/workflows/macos-unit-tests.yaml?query=branch%3Aunstable
-.. |Build Status on Linux| image:: https://github.com/liuliu/ccv/actions/workflows/undef-unit-tests.yaml/badge.svg?branch=unstable
-   :target: https://github.com/liuliu/ccv/actions/workflows/undef-unit-tests.yaml?query=branch%3Aunstable
+.. |Build Status on Linux| image:: https://github.com/liuliu/ccv/actions/workflows/ubsan-unit-tests.yaml/badge.svg?branch=unstable
+   :target: https://github.com/liuliu/ccv/actions/workflows/ubsan-unit-tests.yaml?query=branch%3Aunstable
 .. |Build Status on Linux CUDA| image:: https://github.com/liuliu/ccv/actions/workflows/cuda-int-tests.yaml/badge.svg?branch=unstable
    :target: https://github.com/liuliu/ccv/actions/workflows/cuda-int-tests.yaml?query=branch%3Aunstable
 .. |Build Status on Mac ARM64| image:: https://github.com/liuliu/ccv/actions/workflows/macos-arm-unit-tests.yaml/badge.svg?branch=unstable
    :target: https://github.com/liuliu/ccv/actions/workflows/macos-arm-unit-tests.yaml?query=branch%3Aunstable
 .. |Build Status on Raspberry Pi 4| image:: https://github.com/liuliu/ccv/actions/workflows/raspberrypi-4-unit-tests.yaml/badge.svg?branch=unstable
    :target: https://github.com/liuliu/ccv/actions/workflows/raspberrypi-4-unit-tests.yaml?query=branch%3Aunstable
+.. |Analyze Run| image:: https://github.com/liuliu/ccv/actions/workflows/analyze.yaml/badge.svg?branch=unstable
+   :target: https://github.com/liuliu/ccv/actions/workflows/analyze.yaml?query=branch%3Aunstable
+.. |Coverage Run| image:: https://github.com/liuliu/ccv/actions/workflows/coverage.yaml/badge.svg?branch=unstable
+   :target: https://github.com/liuliu/ccv/actions/workflows/coverage.yaml?query=branch%3Aunstable