diff --git a/jekyll-theme-hamilton.gemspec b/jekyll-theme-hamilton.gemspec
index b24c3d8d2..18a9ebf76 100644
--- a/jekyll-theme-hamilton.gemspec
+++ b/jekyll-theme-hamilton.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |spec|
   spec.name          = "jekyll-theme-hamilton"
-  spec.version       = "1.3.0"
+  spec.version       = "1.4.0"
   spec.authors       = ["Shangzhi Huang"]
   spec.email         = ["ngzhio@gmail.com"]