diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index c6841cc6..4e0ba85b 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -21,7 +21,7 @@ GEM
     execjs (2.7.0)
     faraday (0.14.0)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.21)
+    ffi (1.11.1)
     forwardable-extended (2.6.0)
     gemoji (3.0.0)
     github-pages (177)