diff --git a/Gemfile.lock b/Gemfile.lock
index 35fc7ec..e36ba1e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,7 @@ GEM
   specs:
     coderay (1.0.6)
     diff-lcs (1.1.3)
-    ffi (1.0.11)
+    ffi (1.11.1)
     guard (1.0.3)
       ffi (>= 0.5.0)
       thor (>= 0.14.6)