diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 85d32da6ff..c65178abcd 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -266,7 +266,7 @@ GEM
       concurrent-ruby (~> 1.0)
     unicode-display_width (1.8.0)
     uri (0.13.1)
-    webrick (1.8.2)
+    webrick (1.9.0)
 
 PLATFORMS
   x86_64-linux