diff --git a/Gemfile.lock b/Gemfile.lock
index 3112a04..3dd897d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,7 @@ GEM
     eventmachine (1.2.0.1)
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.10)
+    ffi (1.15.3)
     json (1.8.3)
     listen (3.1.1)
       rb-fsevent (>= 0.9.3)