diff --git a/Gemfile.lock b/Gemfile.lock
index 6cc61d2..52a0199 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,8 +27,8 @@ GEM
     execjs (2.7.0)
     faraday (0.15.2)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.23)
-    ffi (1.9.23-x64-mingw32)
+    ffi (1.11.3)
+    ffi (1.11.3-x64-mingw32)
     forwardable-extended (2.6.0)
     gemoji (3.0.0)
     github-pages (186)