diff --git a/jekyll.gemspec b/jekyll.gemspec
index 41039663..8748275b 100644
--- a/jekyll.gemspec
+++ b/jekyll.gemspec
@@ -23,7 +23,7 @@ Gem::Specification.new do |s|
   s.rdoc_options = ["--charset=UTF-8"]
   s.extra_rdoc_files = %w[README.markdown LICENSE]
 
-  s.add_runtime_dependency('liquid', "~> 2.3")
+  s.add_runtime_dependency('liquid', "~> 2.5.1")
   s.add_runtime_dependency('classifier', "~> 1.3")
   s.add_runtime_dependency('directory_watcher', "~> 1.4.1")
   s.add_runtime_dependency('maruku', "~> 0.5")