diff --git a/Gemfile.lock b/Gemfile.lock
index 74bb3e8..a409df9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,9 +1,9 @@
 GIT
-  remote: git://github.com/rossta/serviceworker-rails.git
-  revision: 2a31cfcb684ec0a7a202d4c42877eebf6a7afa80
+  remote: https://github.com/rossta/serviceworker-rails.git
+  revision: a81aa1f138716e4eda8c1241c8b8152c1b1bda9c
   branch: master
   specs:
-    serviceworker-rails (0.5.0)
+    serviceworker-rails (0.6.0)
       railties (>= 3.1)
 
 GEM
@@ -206,7 +206,8 @@ GEM
     pry-rescue (1.4.4)
       interception (>= 0.5)
       pry
-    puma (3.6.0)
+    puma (4.3.12)
+      nio4r (~> 2.0)
     rack (2.0.5)
     rack-protection (2.0.2)
       rack