diff --git a/Gemfile.lock b/Gemfile.lock
index 554620b0..7ee369fd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,7 @@ GEM
       multi_json (~> 1)
     domain_name (0.5.20161129)
       unf (>= 0.0.5, < 1.0.0)
-    ffi (1.9.17)
+    ffi (1.11.1)
     forwardable-extended (2.6.0)
     http (2.2.0)
       addressable (~> 2.3)