diff --git a/Gemfile.lock b/Gemfile.lock
index adb3a08..da53894 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,9 +18,9 @@ GEM
     execjs (2.0.2)
     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 (1.12.2)
+    ffi (1.12.2-x64-mingw32)
+    ffi (1.12.2-x86-mingw32)
     gemoji (2.1.0)
     github-pages (89)
       activesupport (= 4.2.7)