diff --git a/Gemfile.lock b/Gemfile.lock
index 9abac3c..111ea26 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
     faraday (0.5.4)
       addressable (~> 2.2.2)
       multipart-post (~> 1.1.0)
-      rack (>= 1.1.0, < 2)
+      rack (< 2, >= 1.1.0)
     growl (1.0.3)
     guard (0.3.0)
       open_gem (~> 1.4.2)