diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index efa7a12..66117d3 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -21,7 +21,7 @@ GEM
       ffi (>= 1.3.0)
     execjs (2.6.0)
     fast-stemmer (1.0.2)
-    ffi (1.9.10)
+    ffi (1.11.2)
     gemoji (2.1.0)
     github-pages (39)
       RedCloth (= 4.2.9)