diff --git a/Gemfile.lock b/Gemfile.lock
index b0cb741..5162c95 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,6 +4,7 @@ PATH
     massive_record (0.2.3)
       activemodel (~> 3.0.7)
       activesupport (~> 3.0.7, < 3.0.20)
+      thin
       thrift (~> 0.9.0)
       tzinfo
 
@@ -46,4 +47,3 @@ PLATFORMS
 DEPENDENCIES
   massive_record!
   rspec
-  thin
diff --git a/massive_record.gemspec b/massive_record.gemspec
index 82d37da..65ff310 100644
--- a/massive_record.gemspec
+++ b/massive_record.gemspec
@@ -17,9 +17,9 @@ Gem::Specification.new do |s|
   s.add_dependency "activesupport", "~> 3.0.7", "< 3.0.20"
   s.add_dependency "activemodel", "~> 3.0.7"
   s.add_dependency "tzinfo"
+  s.add_dependency "thin"
 
   s.add_development_dependency "rspec"
-  s.add_development_dependency "thin"
 
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")