diff --git a/Gemfile.lock b/Gemfile.lock
index 69353be..cb517e8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -264,7 +264,7 @@ GEM
       concurrent-ruby (~> 1.0)
     unicode-display_width (1.8.0)
     uri (0.13.0)
-    webrick (1.8.2)
+    webrick (1.9.0)
 
 PLATFORMS
   ruby