diff --git a/Gemfile.lock b/Gemfile.lock
index 6ba659f..ab21516 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,5 +1,5 @@
 GIT
-  remote: git://github.com/pivotal/sinclair.git
+  remote: https://github.com/pivotal/sinclair.git
   revision: b8c88158d000e75c6b8296a96e2dfe6da82ed823
   specs:
     sinclair (0.2.0)
@@ -195,6 +195,7 @@ GEM
     multi_xml (0.5.5)
     multipart-post (2.0.0)
     netrc (0.11.0)
+    nio4r (2.5.2)
     nokogiri (1.6.7.2)
       mini_portile2 (~> 2.0.0.rc2)
     nori (2.6.0)
@@ -218,7 +219,8 @@ GEM
       eventmachine_httpserver
       http_parser.rb (~> 0.6.0)
       multi_json
-    puma (2.16.0)
+    puma (5.6.8)
+      nio4r (~> 2.0)
     rack (1.6.4)
     rack-cors (0.4.0)
     rack-test (0.6.3)