diff --git a/Gemfile.lock b/Gemfile.lock
index e270d70..6464bd0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -171,7 +171,7 @@ GEM
     factory_girl_rails (4.5.0)
       factory_girl (~> 4.5.0)
       railties (>= 3.0.0)
-    ffi (1.9.10)
+    ffi (1.13.1)
     font-awesome-rails (4.4.0.0)
       railties (>= 3.2, < 5.0)
     foreigner (1.7.4)