diff --git a/Gemfile b/Gemfile
index 05f76a4..81d0786 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,9 +1,9 @@
 source 'https://rubygems.org'
 
 # Middleman
-gem 'middleman', '~>4.1.0'
+gem 'middleman', '~>4.2.0'
 gem 'middleman-syntax', '~> 3.0.0'
 gem 'middleman-autoprefixer', '~> 2.7.0'
-gem "middleman-sprockets", "~> 4.0.0"
+gem "middleman-sprockets", "~> 4.1.0"
 gem 'rouge', '~> 2.0.5'
 gem 'redcarpet', '~> 3.4.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 3ef0e8d..352d88d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,58 +1,57 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.2.7.1)
+    activesupport (5.0.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.4.0)
-    autoprefixer-rails (6.4.1)
+    addressable (2.5.0)
+      public_suffix (~> 2.0, >= 2.0.2)
+    autoprefixer-rails (6.6.1)
       execjs
     backports (3.6.8)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
-    coffee-script-source (1.10.0)
+    coffee-script-source (1.12.2)
     compass-import-once (1.0.5)
       sass (>= 3.2, < 3.5)
-    concurrent-ruby (1.0.2)
+    concurrent-ruby (1.0.4)
     contracts (0.13.0)
-    dotenv (2.1.1)
+    dotenv (2.1.2)
     erubis (2.7.0)
     execjs (2.7.0)
     fast_blank (1.0.0)
-    fastimage (2.0.0)
+    fastimage (2.0.1)
       addressable (~> 2)
-    ffi (1.9.14)
+    ffi (1.9.17)
     haml (4.0.7)
       tilt
     hamster (3.0.0)
       concurrent-ruby (~> 1.0)
-    hashie (3.4.4)
+    hashie (3.4.6)
     i18n (0.7.0)
-    json (1.8.3)
-    kramdown (1.12.0)
+    kramdown (1.13.2)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
     memoist (0.15.0)
-    middleman (4.1.10)
+    middleman (4.2.0)
       coffee-script (~> 2.2)
       compass-import-once (= 1.0.5)
       haml (>= 4.0.5)
       kramdown (~> 1.2)
-      middleman-cli (= 4.1.10)
-      middleman-core (= 4.1.10)
+      middleman-cli (= 4.2.0)
+      middleman-core (= 4.2.0)
       sass (>= 3.4.0, < 4.0)
-    middleman-autoprefixer (2.7.0)
-      autoprefixer-rails (>= 6.3.1, < 7.0.0)
+    middleman-autoprefixer (2.7.1)
+      autoprefixer-rails (>= 6.5.2, < 7.0.0)
       middleman-core (>= 3.3.3)
-    middleman-cli (4.1.10)
+    middleman-cli (4.2.0)
       thor (>= 0.17.0, < 2.0)
-    middleman-core (4.1.10)
-      activesupport (~> 4.2)
+    middleman-core (4.2.0)
+      activesupport (>= 4.2, < 5.1)
       addressable (~> 2.3)
       backports (~> 3.6)
       bundler (~> 1.1)
@@ -69,51 +68,52 @@ GEM
       memoist (~> 0.14)
       padrino-helpers (~> 0.13.0)
       parallel
-      rack (>= 1.4.5, < 2.0)
+      rack (>= 1.4.5, < 3)
       sass (>= 3.4)
       servolux
-      tilt (~> 1.4.1)
+      tilt (~> 2.0)
       uglifier (~> 3.0)
-    middleman-sprockets (4.0.0)
+    middleman-sprockets (4.1.0)
       middleman-core (~> 4.0)
       sprockets (>= 3.0)
     middleman-syntax (3.0.0)
       middleman-core (>= 3.2)
       rouge (~> 2.0)
-    minitest (5.9.0)
-    padrino-helpers (0.13.3.1)
+    minitest (5.10.1)
+    padrino-helpers (0.13.3.3)
       i18n (~> 0.6, >= 0.6.7)
-      padrino-support (= 0.13.3.1)
+      padrino-support (= 0.13.3.3)
       tilt (>= 1.4.1, < 3)
-    padrino-support (0.13.3.1)
+    padrino-support (0.13.3.3)
       activesupport (>= 3.1)
-    parallel (1.9.0)
-    rack (1.6.4)
-    rb-fsevent (0.9.7)
+    parallel (1.10.0)
+    public_suffix (2.0.5)
+    rack (2.0.1)
+    rb-fsevent (0.9.8)
     rb-inotify (0.9.7)
       ffi (>= 0.5.0)
     redcarpet (3.4.0)
-    rouge (2.0.5)
-    sass (3.4.22)
+    rouge (2.0.7)
+    sass (3.4.23)
     servolux (0.12.0)
-    sprockets (3.7.0)
+    sprockets (3.7.1)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    thor (0.19.1)
+    thor (0.19.4)
     thread_safe (0.3.5)
-    tilt (1.4.1)
+    tilt (2.0.5)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    uglifier (3.0.2)
+    uglifier (3.0.4)
       execjs (>= 0.3.0, < 3)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  middleman (~> 4.1.0)
+  middleman (~> 4.2.0)
   middleman-autoprefixer (~> 2.7.0)
-  middleman-sprockets (~> 4.0.0)
+  middleman-sprockets (~> 4.1.0)
   middleman-syntax (~> 3.0.0)
   redcarpet (~> 3.4.0)
   rouge (~> 2.0.5)