diff --git a/Gemfile b/Gemfile
index 94cdf816..2a43a8b0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,3 +4,4 @@ gemspec
 
 gem "rake"
 gem "test-unit"
+gem "webrick"
diff --git a/Gemfile.lock b/Gemfile.lock
index 63788dba..67321d2a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,15 +1,24 @@
 PATH
   remote: .
   specs:
-    net-http (0.1.0)
+    net-http (0.1.1)
+      net-protocol
+      uri
 
 GEM
   remote: https://rubygems.org/
   specs:
+    io-wait (0.1.0)
+    net-protocol (0.1.0)
+      io-wait
+      timeout
     power_assert (1.1.5)
     rake (13.0.1)
     test-unit (3.3.5)
       power_assert
+    timeout (0.1.1)
+    uri (0.10.1)
+    webrick (1.7.0)
 
 PLATFORMS
   ruby
@@ -18,6 +27,7 @@ DEPENDENCIES
   net-http!
   rake
   test-unit
+  webrick
 
 BUNDLED WITH
    2.1.4