diff --git a/Gemfile.lock b/Gemfile.lock
index 5896f04..211e632 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -54,7 +54,7 @@ GEM
       unf (>= 0.0.5, < 1.0.0)
     erubis (2.7.0)
     execjs (2.7.0)
-    ffi (1.9.18)
+    ffi (1.11.1)
     globalid (0.4.0)
       activesupport (>= 4.2.0)
     http-cookie (1.0.3)