diff --git a/Gemfile.lock b/Gemfile.lock
index 93ae07f..111c4ff 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -70,7 +70,7 @@ GEM
     factory_girl_rails (4.5.0)
       factory_girl (~> 4.5.0)
       railties (>= 3.0.0)
-    ffi (1.9.8)
+    ffi (1.13.1)
     formatador (0.2.5)
     globalid (0.3.7)
       activesupport (>= 4.1.0)