diff --git a/Gemfile.lock b/Gemfile.lock
index b2ebe08..7a95472 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -24,7 +24,7 @@ GEM
     execjs (2.6.0)
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.10)
+    ffi (1.13.1)
     formatador (0.2.5)
     gemoji (2.1.0)
     github-pages (44)