diff --git a/Gemfile.lock b/Gemfile.lock
index 0e55d9d..cd5f592 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -19,9 +19,9 @@ GEM
     execjs (2.7.0)
     faraday (0.13.1)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.18)
-    ffi (1.9.18-x64-mingw32)
-    ffi (1.9.18-x86-mingw32)
+    ffi (1.12.2)
+    ffi (1.12.2-x64-mingw32)
+    ffi (1.12.2-x86-mingw32)
     forwardable-extended (2.6.0)
     gemoji (3.0.0)
     github-pages (168)