diff --git a/Gemfile.lock b/Gemfile.lock
index d295556..f40e506 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,7 +43,7 @@ GEM
     erubis (2.7.0)
     execjs (1.4.0)
       multi_json (~> 1.0)
-    ffi (1.1.5)
+    ffi (1.11.1)
     guard (1.3.2)
       listen (>= 0.4.2)
       thor (>= 0.14.6)