diff --git a/Gemfile.lock b/Gemfile.lock
index 5590a14..aa78e29 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,7 +10,7 @@ GEM
       multipart-post (>= 1.2, < 3)
     faraday_middleware (0.9.1)
       faraday (>= 0.7.4, < 0.10)
-    ffi (1.9.3)
+    ffi (1.13.1)
     multi_json (1.10.1)
     multipart-post (2.0.0)
     ruby-progressbar (1.5.1)