diff --git a/Gemfile.lock b/Gemfile.lock
index 9e2e492..3c4f450 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,7 @@ GEM
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.9)
+    concurrent-ruby (1.3.7)
     em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -83,7 +83,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  bundler
+  bundler (~> 1.12, >= 0)
   henry-jekyll!
   jekyll
   jekyll-feed (~> 0.15)
@@ -91,7 +91,7 @@ DEPENDENCIES
   jekyll-redirect-from (~> 0.16)
   jekyll-seo-tag (~> 2.7)
   jekyll-sitemap (~> 1.4)
-  webrick
+  webrick (~> 1.7, >= 0)
 
 BUNDLED WITH
    2.2.22