diff --git a/404.html b/404.html
index b5d3db504..a708b68e1 100644
--- a/404.html
+++ b/404.html
@@ -1,5 +1,7 @@
 ---
 # The 404 page
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT License
 layout: page
diff --git a/_config.yml b/_config.yml
index 276a5e1b2..04fe92511 100644
--- a/_config.yml
+++ b/_config.yml
@@ -1,4 +1,6 @@
 # The Site Settings
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT licensed
 
diff --git a/_data/label.yml b/_data/label.yml
index d4305db2f..2b30c60cc 100644
--- a/_data/label.yml
+++ b/_data/label.yml
@@ -1,4 +1,6 @@
 # The label text of site.
+#  v2.0
+#  https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT Licensed
 
diff --git a/_includes/date-format.html b/_includes/date-format.html
index 9c83b3701..2929063af 100644
--- a/_includes/date-format.html
+++ b/_includes/date-format.html
@@ -1,5 +1,7 @@
 <!--
  Define the liquid date formats.
+ v2.0
+ https://github.com/cotes2020/jekyll-theme-chirpy
  © 2019 Cotes Chung
  Published under the MIT License
 -->
diff --git a/_includes/disqus.html b/_includes/disqus.html
index b97c80921..316412208 100644
--- a/_includes/disqus.html
+++ b/_includes/disqus.html
@@ -1,6 +1,8 @@
 <!--
   The Disqus lazy loading.
   Powered by: https://osvaldas.info/lazy-loading-disqus-comments
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2019 Cotes Chung
   MIT License
 -->
diff --git a/_includes/favicons.html b/_includes/favicons.html
index e21aeced6..a72cd5317 100644
--- a/_includes/favicons.html
+++ b/_includes/favicons.html
@@ -1,6 +1,8 @@
 <!--
   The Favicons for Web, Android, Microsoft, and iOS (iPhone and iPad) Apps
   Generated by: https://www.favicon-generator.org/
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2019 Cotes Chung
   Published under the MIT license
 -->
diff --git a/_includes/footer.html b/_includes/footer.html
index 659f6df87..476199d6d 100644
--- a/_includes/footer.html
+++ b/_includes/footer.html
@@ -1,5 +1,7 @@
 <!--
   The Footer
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2017-2019 Cotes Chung
   MIT License
 -->
diff --git a/_includes/google-analytics.html b/_includes/google-analytics.html
index 983746baf..dc46c8325 100644
--- a/_includes/google-analytics.html
+++ b/_includes/google-analytics.html
@@ -1,5 +1,7 @@
 <!--
   The GA snippet
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2017-2019 Cotes Chung
   MIT License
 -->
diff --git a/_includes/head.html b/_includes/head.html
index a774ac25c..aaa4f2e29 100644
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -1,5 +1,7 @@
 <!--
   The Head
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2017-2019 Cotes Chung
   MIT License
 -->
diff --git a/_includes/panel.html b/_includes/panel.html
index feafb877f..5a33e0385 100644
--- a/_includes/panel.html
+++ b/_includes/panel.html
@@ -1,5 +1,7 @@
 <!--
   The Pannel on right side (Desktop views)
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2017-2019 Cotes Chung
   MIT License
 -->
diff --git a/_includes/related-posts.html b/_includes/related-posts.html
index b02eb1085..86111ad6b 100644
--- a/_includes/related-posts.html
+++ b/_includes/related-posts.html
@@ -1,6 +1,8 @@
 <!--
  The related posts of current post.
  Placed in the bottom of every single post.
+ v2.0
+ https://github.com/cotes2020/jekyll-theme-chirpy
  © 2019 Cotes Chung
  Published under the MIT License
 -->
diff --git a/_includes/search-loader.html b/_includes/search-loader.html
index 3b21b8b0a..80fe2455a 100644
--- a/_includes/search-loader.html
+++ b/_includes/search-loader.html
@@ -1,5 +1,7 @@
 <!--
   Jekyll Simple Search loader
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2017-2019 Cotes Chung
   MIT License
 -->
diff --git a/_includes/search-results.html b/_includes/search-results.html
index 808357487..4018d7f7d 100644
--- a/_includes/search-results.html
+++ b/_includes/search-results.html
@@ -1,5 +1,7 @@
 <!--
   The Search results
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2017-2019 Cotes Chung
   MIT License
 -->
diff --git a/_includes/sidebar.html b/_includes/sidebar.html
index c0e29aaa1..6f75601cd 100644
--- a/_includes/sidebar.html
+++ b/_includes/sidebar.html
@@ -1,5 +1,7 @@
 <!--
   The Side Bar
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2017-2019 Cotes Chung
   MIT License
 -->
diff --git a/_includes/topbar.html b/_includes/topbar.html
index 8f5b6051e..79e16d241 100644
--- a/_includes/topbar.html
+++ b/_includes/topbar.html
@@ -1,5 +1,7 @@
 <!--
   The Top Bar
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2017-2019 Cotes Chung
   MIT License
 -->
diff --git a/_includes/trending-tags.html b/_includes/trending-tags.html
index 1c48ddb29..4b0c3678d 100644
--- a/_includes/trending-tags.html
+++ b/_includes/trending-tags.html
@@ -1,6 +1,7 @@
 <!--
   The trending tags list
-
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2019 Cotes Chung
   MIT Licensed
 -->
diff --git a/_layouts/category.html b/_layouts/category.html
index b2a1cb6fa..5e9dd1fc4 100644
--- a/_layouts/category.html
+++ b/_layouts/category.html
@@ -1,7 +1,8 @@
 ---
 layout: page
 # The Category layout
-# © 2017-2019 Cotes Chung
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # MIT Licensed
 ---
 
diff --git a/_layouts/default.html b/_layouts/default.html
index c73ef4d31..22b008405 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -1,6 +1,8 @@
 ---
 layout: compress
 # Default layout
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT Licensed
 ---
diff --git a/_layouts/home.html b/_layouts/home.html
index ff005f531..b25951c2e 100644
--- a/_layouts/home.html
+++ b/_layouts/home.html
@@ -1,6 +1,8 @@
 ---
 layout: page
 # The Home page layout
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT Licensed
 ---
diff --git a/_layouts/page.html b/_layouts/page.html
index 573d960ee..86a674e60 100644
--- a/_layouts/page.html
+++ b/_layouts/page.html
@@ -1,6 +1,8 @@
 ---
 layout: default
 # The page layout
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT License
 ---
diff --git a/_layouts/post.html b/_layouts/post.html
index 60aa60082..8e40f717a 100644
--- a/_layouts/post.html
+++ b/_layouts/post.html
@@ -1,6 +1,8 @@
 ---
 layout: default
 # The posts' layout
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT Licensed
 ---
diff --git a/_layouts/tag.html b/_layouts/tag.html
index 8e81ca8c5..b00d2c562 100644
--- a/_layouts/tag.html
+++ b/_layouts/tag.html
@@ -1,6 +1,8 @@
 ---
 layout: page
 # The layout for Tag page
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT Licensed
 ---
diff --git a/_scripts/py/init_all.py b/_scripts/py/init_all.py
index 1fb454434..1e029c3e2 100755
--- a/_scripts/py/init_all.py
+++ b/_scripts/py/init_all.py
@@ -3,6 +3,8 @@
 
 """
 Automatic invokes all initial scripts for project.
+v2.0
+https://github.com/cotes2020/jekyll-theme-chirpy
 © 2018-2019 Cotes Chung
 Licensed under MIT
 """
diff --git a/_scripts/py/pages_generator.py b/_scripts/py/pages_generator.py
index 11baacba1..eca283242 100755
--- a/_scripts/py/pages_generator.py
+++ b/_scripts/py/pages_generator.py
@@ -8,6 +8,8 @@ Dependencies:
   - git
   - ruamel.yaml
 
+v2.0
+https://github.com/cotes2020/jekyll-theme-chirpy
 © 2018-2019 Cotes Chung
 MIT License
 '''
diff --git a/_scripts/py/update_posts_lastmod.py b/_scripts/py/update_posts_lastmod.py
index be3e781c1..f3f2d4105 100755
--- a/_scripts/py/update_posts_lastmod.py
+++ b/_scripts/py/update_posts_lastmod.py
@@ -9,6 +9,8 @@ Dependencies:
   - git
   - ruamel.yaml
 
+v2.0
+https://github.com/cotes2020/jekyll-theme-chirpy
 © 2018-2019 Cotes Chung
 Licensed under MIT
 """
diff --git a/_scripts/py/utils/common.py b/_scripts/py/utils/common.py
index 2b5d70110..0f067bedf 100644
--- a/_scripts/py/utils/common.py
+++ b/_scripts/py/utils/common.py
@@ -4,6 +4,8 @@
 '''
 Common functions to other scripts.
 
+v2.0
+https://github.com/cotes2020/jekyll-theme-chirpy
 © 2018-2019 Cotes Chung
 MIT License
 '''
diff --git a/_scripts/sh/sync_monitor.sh b/_scripts/sh/sync_monitor.sh
index 908978563..e2bfca00e 100644
--- a/_scripts/sh/sync_monitor.sh
+++ b/_scripts/sh/sync_monitor.sh
@@ -1,7 +1,8 @@
 #!/bin/bash
 
 # Files sync monitoer
-#
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2019 Cotes Chung
 # MIT Licensed
 
diff --git a/_scripts/travis/cibuild.sh b/_scripts/travis/cibuild.sh
index 1163bde9b..94052aa84 100644
--- a/_scripts/travis/cibuild.sh
+++ b/_scripts/travis/cibuild.sh
@@ -1,7 +1,8 @@
 #!/bin/bash
 
 # Travis CI build jobs.
-#
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2019 Cotes Chung
 # Published under MIT License
 
diff --git a/assets/css/archives.scss b/assets/css/archives.scss
index 105abc43d..0f162542f 100644
--- a/assets/css/archives.scss
+++ b/assets/css/archives.scss
@@ -2,6 +2,8 @@
 ---
 /*!
   Style for Archives
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2019 Cotes Chung
   MIT License
 */
diff --git a/assets/css/categories.scss b/assets/css/categories.scss
index 41d0aeaea..d16566251 100644
--- a/assets/css/categories.scss
+++ b/assets/css/categories.scss
@@ -2,6 +2,8 @@
 ---
 /*!
   Style for Tab Categories
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2019 Cotes Chung
   MIT License
 */
diff --git a/assets/css/category-tag.scss b/assets/css/category-tag.scss
index 303a88bfc..ee9185ea8 100644
--- a/assets/css/category-tag.scss
+++ b/assets/css/category-tag.scss
@@ -2,6 +2,8 @@
 ---
 /*!
   Style for page Category and Tag
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2019 Cotes Chung
   MIT License
 */
diff --git a/assets/css/home.scss b/assets/css/home.scss
index d16717963..cbbc4866e 100644
--- a/assets/css/home.scss
+++ b/assets/css/home.scss
@@ -3,6 +3,8 @@
 
 /*!
   Style for Homepage
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2019 Cotes Chung
   MIT License
 */
diff --git a/assets/css/main.scss b/assets/css/main.scss
index db4838e63..90eae333a 100644
--- a/assets/css/main.scss
+++ b/assets/css/main.scss
@@ -2,6 +2,8 @@
 ---
 /*!
 * The main styles.
+* v2.0
+* https://github.com/cotes2020/jekyll-theme-chirpy
 * © 2018-2019 Cotes Chung
 * MIT Licensed
 */
diff --git a/assets/css/post.scss b/assets/css/post.scss
index 76e74d51c..fedb5c8b1 100644
--- a/assets/css/post.scss
+++ b/assets/css/post.scss
@@ -2,6 +2,8 @@
 ---
 /*!
   Individual styles for Post
+  v2.0
+  https://github.com/cotes2020/jekyll-theme-chirpy
   © 2019 Cotes Chung
   MIT License
 */
diff --git a/assets/css/syntax.scss b/assets/css/syntax.scss
index 2c519316e..5da6092f1 100644
--- a/assets/css/syntax.scss
+++ b/assets/css/syntax.scss
@@ -2,6 +2,8 @@
 ---
 /*
 * The syntax highlight.
+* v2.0
+* https://github.com/cotes2020/jekyll-theme-chirpy
 * © 2018-2019 Cotes Chung
 * MIT Licensed
 */
diff --git a/assets/css/tags.scss b/assets/css/tags.scss
index 592108e52..d4327dd4a 100644
--- a/assets/css/tags.scss
+++ b/assets/css/tags.scss
@@ -2,9 +2,11 @@
 ---
 
 /*!
-  Styles for Tab Tags
-  © 2019 Cotes Chung
-  MIT License
+* Styles for Tab Tags
+* v2.0
+* https://github.com/cotes2020/jekyll-theme-chirpy
+* © 2019 Cotes Chung
+* MIT License
 */
 
 .tag {
diff --git a/assets/img/favicons/browserconfig.xml b/assets/img/favicons/browserconfig.xml
index 3b6225908..15858d077 100644
--- a/assets/img/favicons/browserconfig.xml
+++ b/assets/img/favicons/browserconfig.xml
@@ -1,5 +1,7 @@
 ---
 # A part of the Favicons
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2019 Cotes Chung
 # MIT License
 layout: compress
diff --git a/assets/img/favicons/manifest.json b/assets/img/favicons/manifest.json
index b53302ef9..96a7198e4 100644
--- a/assets/img/favicons/manifest.json
+++ b/assets/img/favicons/manifest.json
@@ -1,5 +1,7 @@
 ---
 # A part of the Favicons
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2019 Cotes Chung
 # MIT License
 layout: compress
diff --git a/assets/js/_src/_commons/search-display.js b/assets/js/_src/_commons/search-display.js
index 788241731..37285c85c 100644
--- a/assets/js/_src/_commons/search-display.js
+++ b/assets/js/_src/_commons/search-display.js
@@ -1,5 +1,7 @@
 /*
 * This script make #search-result-wrapper switch to unloaded or shown automatically.
+* v2.0
+* https://github.com/cotes2020/jekyll-theme-chirpy
 * © 2018-2019 Cotes Chung
 * MIT License
 */
diff --git a/assets/js/_src/_commons/sidebar.js b/assets/js/_src/_commons/sidebar.js
index 96c9633d4..655f77116 100644
--- a/assets/js/_src/_commons/sidebar.js
+++ b/assets/js/_src/_commons/sidebar.js
@@ -1,5 +1,7 @@
 /**
  * Expand or close the sidebar in mobile screens.
+ * v2.0
+ * https://github.com/cotes2020/jekyll-theme-chirpy
  * © 2018-2019 Cotes Chung
  * MIT License
  */
diff --git a/assets/js/_src/_commons/tooltip.js b/assets/js/_src/_commons/tooltip.js
index 8b8ff1d8e..3ed731cc7 100644
--- a/assets/js/_src/_commons/tooltip.js
+++ b/assets/js/_src/_commons/tooltip.js
@@ -1,7 +1,9 @@
 /**
-* Initial Bootstrap Tooltip.
-* © 2019 Cotes Chung
-* MIT License
+ * Initial Bootstrap Tooltip.
+ * v2.0
+ * https://github.com/cotes2020/jekyll-theme-chirpy
+ * © 2019 Cotes Chung
+ * MIT License
 */
 $(function () {
   $('[data-toggle="tooltip"]').tooltip({placement: "auto"});
diff --git a/assets/js/_src/_commons/topbar-switch.js b/assets/js/_src/_commons/topbar-switch.js
index 7bc99db7e..373bb4271 100644
--- a/assets/js/_src/_commons/topbar-switch.js
+++ b/assets/js/_src/_commons/topbar-switch.js
@@ -1,5 +1,7 @@
 /*
  * Hide Header on scroll down
+ * v2.0
+ * https://github.com/cotes2020/jekyll-theme-chirpy
  * © 2018-2019 Cotes Chung
  * MIT License
  */
diff --git a/assets/js/_src/_commons/topbar-title.js b/assets/js/_src/_commons/topbar-title.js
index 4607ef524..4086e47c7 100644
--- a/assets/js/_src/_commons/topbar-title.js
+++ b/assets/js/_src/_commons/topbar-title.js
@@ -1,7 +1,9 @@
 /*
-* Topbar title auto change while scrolling in mobile screens.
-* © 2018-2019 Cotes Chung
-* MIT License
+ * Topbar title auto change while scrolling in mobile screens.
+ * v2.0
+ * https://github.com/cotes2020/jekyll-theme-chirpy
+ * © 2018-2019 Cotes Chung
+ * MIT License
 */
 $(function(){
 
diff --git a/assets/js/_src/category-collapse.js b/assets/js/_src/category-collapse.js
index b11d689dd..e6ae255d5 100644
--- a/assets/js/_src/category-collapse.js
+++ b/assets/js/_src/category-collapse.js
@@ -1,5 +1,7 @@
 /*
  * Tab 'Categories' expand/close effect.
+ * v2.0
+ * https://github.com/cotes2020/jekyll-theme-chirpy
  * © 2018-2019 Cotes Chung
  * MIT License
  */
diff --git a/assets/js/_src/pageviews.js b/assets/js/_src/pageviews.js
index cf6184e01..563432d7a 100644
--- a/assets/js/_src/pageviews.js
+++ b/assets/js/_src/pageviews.js
@@ -5,6 +5,8 @@
  *   - jQuery
  *   - countUp.js(https://github.com/inorganik/countUp.js)
  *
+ * v2.0
+ * https://github.com/cotes2020/jekyll-theme-chirpy
  * © 2018-2019 Cotes Chung
  * MIT License
  */
diff --git a/assets/js/_src/timeago.js b/assets/js/_src/timeago.js
index 4b8646210..d78a65d14 100644
--- a/assets/js/_src/timeago.js
+++ b/assets/js/_src/timeago.js
@@ -1,6 +1,7 @@
 /*
  * Caculate the Timeago
- *
+ * v2.0
+ * https://github.com/cotes2020/jekyll-theme-chirpy
  * © 2019 Cotes Chung
  * MIT Licensed
  */
diff --git a/assets/js/_src/toc.js b/assets/js/_src/toc.js
index c6f1a9f27..3078579e5 100644
--- a/assets/js/_src/toc.js
+++ b/assets/js/_src/toc.js
@@ -1,6 +1,7 @@
 /*
  * Hide the empty ToC in posts.
- *
+ * v2.0
+ * https://github.com/cotes2020/jekyll-theme-chirpy
  * © 2019 Cotes Chung
  * MIT Licensed
  */
diff --git a/feed.xml b/feed.xml
index 5788ca05d..980b9c320 100644
--- a/feed.xml
+++ b/feed.xml
@@ -1,6 +1,8 @@
 ---
 layout: compress
 # Atom Feed, reference: https://validator.w3.org/feed/docs/atom.html
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2019 Cotes Chung
 # MIT License
 ---
diff --git a/index.html b/index.html
index 0055c3cbd..cfecc6c4d 100644
--- a/index.html
+++ b/index.html
@@ -6,6 +6,8 @@ breadcrumb:
     label: Posts
 
 # Index page
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT License
 ---
\ No newline at end of file
diff --git a/robots.txt b/robots.txt
index 3216a4905..ad4a840fd 100644
--- a/robots.txt
+++ b/robots.txt
@@ -1,5 +1,7 @@
 ---
 # The robots rules
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT License
 layout: null
diff --git a/sitemap.xml b/sitemap.xml
index 0fe8545c6..28644d030 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -2,6 +2,8 @@
 layout: compress
 #
 # The Sitemap template
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT License
 ---
diff --git a/tabs/about.md b/tabs/about.md
index c2a6159a8..8339fbd58 100644
--- a/tabs/about.md
+++ b/tabs/about.md
@@ -2,6 +2,8 @@
 title: About
 
 # The About page
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT License
 ---
diff --git a/tabs/archives.md b/tabs/archives.md
index 6111f53fd..8d5508c3e 100644
--- a/tabs/archives.md
+++ b/tabs/archives.md
@@ -2,6 +2,8 @@
 title: Archives
 
 # The Archives of posts.
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT License
 ---
diff --git a/tabs/categories.md b/tabs/categories.md
index 3c1d82df4..c720ff585 100644
--- a/tabs/categories.md
+++ b/tabs/categories.md
@@ -2,6 +2,8 @@
 title: Categories
 
 # All the Categories of posts
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT License
 ---
diff --git a/tabs/tags.md b/tabs/tags.md
index c5c675480..06271900f 100644
--- a/tabs/tags.md
+++ b/tabs/tags.md
@@ -2,6 +2,8 @@
 title: Tags
 
 # All the Tags of posts.
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2017-2019 Cotes Chung
 # MIT License
 ---
diff --git a/tools/build.sh b/tools/build.sh
index 79e272b19..ce1d73437 100755
--- a/tools/build.sh
+++ b/tools/build.sh
@@ -1,6 +1,8 @@
 #!/bin/bash
 #
 # Build jekyll site and store site files in ./_site
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2019 Cotes Chung
 # Published under MIT License
 
diff --git a/tools/init.sh b/tools/init.sh
index bf8009e0d..7821555d1 100755
--- a/tools/init.sh
+++ b/tools/init.sh
@@ -1,6 +1,8 @@
 #!/bin/bash
 #
 # Initial the Categories/Tags pages and Lastmod for posts.
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2019 Cotes Chung
 # Published under MIT License
 
diff --git a/tools/pv.sh b/tools/pv.sh
index ffdad6440..98f73baf4 100755
--- a/tools/pv.sh
+++ b/tools/pv.sh
@@ -7,6 +7,8 @@
 #   - jq
 #   - wget
 #
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2019 Cotes Chung
 # MIT Licensed
 
diff --git a/tools/run.sh b/tools/run.sh
index 3bba2a4f4..b45659e6c 100755
--- a/tools/run.sh
+++ b/tools/run.sh
@@ -5,6 +5,8 @@
 # Requirement:
 #   Option '-r, --realtime' needs fswatch › http://emcrisostomo.github.io/fswatch/
 #
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2019 Cotes Chung
 # Published under MIT License