diff --git a/gollum.gemspec b/gollum.gemspec
index 55f2b451..a39a300a 100644
--- a/gollum.gemspec
+++ b/gollum.gemspec
@@ -26,7 +26,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency 'gollum-lib', '~> 5.0.a'
   s.add_dependency 'kramdown', '~> 1.9.0'
-  s.add_dependency 'sinatra', '~> 1.4', '>= 1.4.4'
+  s.add_dependency 'sinatra', '~> 2.0'
   s.add_dependency 'mustache', ['>= 0.99.5', '< 1.0.0']
   s.add_dependency 'useragent', '~> 0.16.2'
   s.add_dependency 'gemojione', '~> 3.2'