diff --git a/Gemfile.lock b/Gemfile.lock
index 353b81f..16cec58 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,7 +17,7 @@ GEM
       sass (>= 3.3.0, < 3.5)
     compass-import-once (1.0.5)
       sass (>= 3.2, < 3.5)
-    ffi (1.9.6)
+    ffi (1.15.5)
     multi_json (1.10.1)
     rb-fsevent (0.9.4)
     rb-inotify (0.9.5)