diff --git a/Gemfile.lock b/Gemfile.lock
index f44b74c..fa7f228 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     diff-lcs (1.1.3)
-    ffi (1.1.5)
+    ffi (1.11.1)
     guard (1.3.0)
       listen (>= 0.4.2)
       thor (>= 0.14.6)