diff --git a/Gemfile.lock b/Gemfile.lock
index 5d39662..d8133ef 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,6 +13,7 @@ GEM
     colorator (0.1)
     execjs (2.2.2)
     fast-stemmer (1.0.2)
+    ffi (1.9.6)
     ffi (1.9.6-x64-mingw32)
     hitimes (1.2.2)
     jekyll (2.5.1)
@@ -83,6 +84,7 @@ GEM
     yajl-ruby (1.1.0)
 
 PLATFORMS
+  ruby
   x64-mingw32
 
 DEPENDENCIES