diff --git a/Gemfile.lock b/Gemfile.lock
index 58c4fa1..062f233 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -57,6 +57,7 @@ GEM
 
 PLATFORMS
   ruby
+  x64-mingw32
 
 DEPENDENCIES
   jasmine (~> 2.0.0)