diff --git a/building-a-web-application/Gemfile.lock b/building-a-web-application/Gemfile.lock
index b628e67..df7bd09 100644
--- a/building-a-web-application/Gemfile.lock
+++ b/building-a-web-application/Gemfile.lock
@@ -88,7 +88,7 @@ GEM
     tilt (2.2.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    webrick (1.7.0)
+    webrick (1.8.2)
 
 PLATFORMS
   ruby