diff --git a/Gemfile.lock b/Gemfile.lock
index c972fc7..c4d2aad 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -61,7 +61,7 @@ GEM
     factory_girl_rails (4.1.0)
       factory_girl (~> 4.1.0)
       railties (>= 3.0.0)
-    ffi (1.1.5)
+    ffi (1.13.1)
     guard (1.5.4)
       listen (>= 0.4.2)
       lumberjack (>= 1.0.2)