diff --git a/_javascript/copyright b/_javascript/copyright
index 9f61bfa51..0b2ce9c80 100644
--- a/_javascript/copyright
+++ b/_javascript/copyright
@@ -1,5 +1,5 @@
 /*!
- * Chirpy v4.2.0 (https://github.com/cotes2020/jekyll-theme-chirpy/)
+ * Chirpy v4.2.1 (https://github.com/cotes2020/jekyll-theme-chirpy/)
  * © 2019 Cotes Chung
  * MIT Licensed
  */
diff --git a/_sass/jekyll-theme-chirpy.scss b/_sass/jekyll-theme-chirpy.scss
index 5c6113b21..d0875b671 100644
--- a/_sass/jekyll-theme-chirpy.scss
+++ b/_sass/jekyll-theme-chirpy.scss
@@ -1,7 +1,7 @@
 /*!
  * The styles for Jekyll theme Chirpy
  *
- * Chirpy v4.2.0 (https://github.com/cotes2020/jekyll-theme-chirpy)
+ * Chirpy v4.2.1 (https://github.com/cotes2020/jekyll-theme-chirpy)
  * © 2019 Cotes Chung
  * MIT Licensed
  */
diff --git a/assets/js/dist/categories.min.js b/assets/js/dist/categories.min.js
index 6570b49d6..cfe5c453c 100644
--- a/assets/js/dist/categories.min.js
+++ b/assets/js/dist/categories.min.js
@@ -1,5 +1,5 @@
 /*!
- * Chirpy v4.2.0 (https://github.com/cotes2020/jekyll-theme-chirpy/)
+ * Chirpy v4.2.1 (https://github.com/cotes2020/jekyll-theme-chirpy/)
  * © 2019 Cotes Chung
  * MIT Licensed
  */
diff --git a/assets/js/dist/commons.min.js b/assets/js/dist/commons.min.js
index a7ff0eea3..5302604e8 100644
--- a/assets/js/dist/commons.min.js
+++ b/assets/js/dist/commons.min.js
@@ -1,5 +1,5 @@
 /*!
- * Chirpy v4.2.0 (https://github.com/cotes2020/jekyll-theme-chirpy/)
+ * Chirpy v4.2.1 (https://github.com/cotes2020/jekyll-theme-chirpy/)
  * © 2019 Cotes Chung
  * MIT Licensed
  */
diff --git a/assets/js/dist/home.min.js b/assets/js/dist/home.min.js
index 2fe7c6525..4f1af8f18 100644
--- a/assets/js/dist/home.min.js
+++ b/assets/js/dist/home.min.js
@@ -1,5 +1,5 @@
 /*!
- * Chirpy v4.2.0 (https://github.com/cotes2020/jekyll-theme-chirpy/)
+ * Chirpy v4.2.1 (https://github.com/cotes2020/jekyll-theme-chirpy/)
  * © 2019 Cotes Chung
  * MIT Licensed
  */
diff --git a/assets/js/dist/page.min.js b/assets/js/dist/page.min.js
index f72801405..50ae65172 100644
--- a/assets/js/dist/page.min.js
+++ b/assets/js/dist/page.min.js
@@ -1,5 +1,5 @@
 /*!
- * Chirpy v4.2.0 (https://github.com/cotes2020/jekyll-theme-chirpy/)
+ * Chirpy v4.2.1 (https://github.com/cotes2020/jekyll-theme-chirpy/)
  * © 2019 Cotes Chung
  * MIT Licensed
  */
diff --git a/assets/js/dist/post.min.js b/assets/js/dist/post.min.js
index 95ca4bc2e..070dff800 100644
--- a/assets/js/dist/post.min.js
+++ b/assets/js/dist/post.min.js
@@ -1,5 +1,5 @@
 /*!
- * Chirpy v4.2.0 (https://github.com/cotes2020/jekyll-theme-chirpy/)
+ * Chirpy v4.2.1 (https://github.com/cotes2020/jekyll-theme-chirpy/)
  * © 2019 Cotes Chung
  * MIT Licensed
  */
diff --git a/assets/js/dist/pvreport.min.js b/assets/js/dist/pvreport.min.js
index 6352c72de..f134f39ba 100644
--- a/assets/js/dist/pvreport.min.js
+++ b/assets/js/dist/pvreport.min.js
@@ -1,5 +1,5 @@
 /*!
- * Chirpy v4.2.0 (https://github.com/cotes2020/jekyll-theme-chirpy/)
+ * Chirpy v4.2.1 (https://github.com/cotes2020/jekyll-theme-chirpy/)
  * © 2019 Cotes Chung
  * MIT Licensed
  */
diff --git a/jekyll-theme-chirpy.gemspec b/jekyll-theme-chirpy.gemspec
index 95090e066..012e0c42f 100644
--- a/jekyll-theme-chirpy.gemspec
+++ b/jekyll-theme-chirpy.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |spec|
   spec.name          = "jekyll-theme-chirpy"
-  spec.version       = "4.2.0"
+  spec.version       = "4.2.1"
   spec.authors       = ["Cotes Chung"]
   spec.email         = ["cotes.chung@gmail.com"]
 
diff --git a/package.json b/package.json
index 0a806123d..cbe8cc3c0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jekyll-theme-chirpy",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "A minimal, sidebar, responsive web design Jekyll theme that focuses on text presentation.",
   "main": "index.js",
   "directories": {