diff --git a/docs/_spec/Gemfile.lock b/docs/_spec/Gemfile.lock
index c703a87bf993..38a790c676eb 100644
--- a/docs/_spec/Gemfile.lock
+++ b/docs/_spec/Gemfile.lock
@@ -41,7 +41,7 @@ GEM
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    webrick (1.8.2)
+    webrick (1.9.1)
 
 PLATFORMS
   ruby