diff --git a/Gemfile.lock b/Gemfile.lock
index 5bdffee5..372615b5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -67,7 +67,7 @@ GEM
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     unicode-display_width (2.5.0)
-    webrick (1.8.1)
+    webrick (1.9.1)
 
 PLATFORMS
   ruby