diff --git a/Gemfile.lock b/Gemfile.lock
index 10622693b0..005ef8f858 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,12 +2,14 @@ PATH
   remote: .
   specs:
     faker (1.2.0)
-      i18n (~> 0.5)
+      i18n (>= 0.5, < 2.0)
 
 GEM
   remote: http://rubygems.org/
   specs:
-    i18n (0.6.5)
+    concurrent-ruby (1.1.8)
+    i18n (1.8.9)
+      concurrent-ruby (~> 1.0)
     rake (10.1.0)
     test-unit (2.5.5)
 
diff --git a/faker.gemspec b/faker.gemspec
index 28792b7b7a..d697284df3 100644
--- a/faker.gemspec
+++ b/faker.gemspec
@@ -13,7 +13,7 @@ Gem::Specification.new do |s|
 
   s.rubyforge_project = "faker"
 
-  s.add_dependency('i18n', '~> 0.5')
+  s.add_dependency('i18n', '>= 0.5', '< 2.0')
 
   s.files         = `git ls-files -- lib/*`.split("\n") + %w(History.txt License.txt README.md)
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")