diff --git a/Gemfile b/Gemfile
index 2a70357..c3056f2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -29,3 +29,5 @@ end
 
 # Performance-booster for watching directories on Windows
 # gem "wdm", "~> 0.1.0" if Gem.win_platform?
+
+gem "webrick", "~> 1.7"