diff --git a/Gemfile.lock b/Gemfile.lock
index 5aebf29..1fa6e46 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -65,7 +65,7 @@ GEM
       warden (~> 1.2.3)
     erubis (2.7.0)
     execjs (2.7.0)
-    ffi (1.9.14)
+    ffi (1.15.3)
     globalid (0.3.7)
       activesupport (>= 4.1.0)
     i18n (0.7.0)