diff --git a/Gemfile.lock b/Gemfile.lock
index 1c3b680..338f2aa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,9 +18,9 @@ GEM
     execjs (2.7.0)
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.14)
-    ffi (1.9.14-x64-mingw32)
-    ffi (1.9.14-x86-mingw32)
+    ffi (1.11.3)
+    ffi (1.11.3-x64-mingw32)
+    ffi (1.11.3-x86-mingw32)
     forwardable-extended (2.6.0)
     gemoji (2.1.0)
     github-pages (99)