diff --git a/Gemfile.lock b/Gemfile.lock
index b880f06..fc32bbe 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,8 +21,8 @@ GEM
     execjs (2.7.0)
     faraday (0.14.0)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.21)
-    ffi (1.9.21-x64-mingw32)
+    ffi (1.11.1)
+    ffi (1.11.1-x64-mingw32)
     forwardable-extended (2.6.0)
     gemoji (3.0.0)
     github-pages (177)