diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 1bc1a33e82..1574e3c5d4 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -28,7 +28,7 @@ GEM
     execjs (2.7.0)
     faraday (0.15.4)
       multipart-post (>= 1.2, < 3)
-    ffi (1.10.0)
+    ffi (1.11.0)
     forwardable-extended (2.6.0)
     gemoji (3.0.1)
     github-pages (198)