diff --git a/Gemfile.lock b/Gemfile.lock
index 1bf4f89..1e0767a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,17 +1,15 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.2.5.1)
+    activesupport (4.2.11.3)
       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 (6.3.1)
+    autoprefixer-rails (6.7.7.2)
       execjs
-      json
-    backports (3.6.7)
+    backports (3.18.1)
     capybara (2.5.0)
       mime-types (>= 1.16)
       nokogiri (>= 1.3.3)
@@ -27,21 +25,21 @@ GEM
     concurrent-ruby (0.9.2)
     contracts (0.12.0)
     erubis (2.7.0)
-    execjs (2.6.0)
+    execjs (2.7.0)
     fastimage (1.8.1)
       addressable (~> 2.3, >= 2.3.5)
-    ffi (1.9.10)
+    ffi (1.13.1)
     haml (4.0.7)
       tilt
     hamster (2.0.0)
       concurrent-ruby (~> 0.8)
-    hashie (3.4.3)
+    hashie (3.6.0)
     i18n (0.7.0)
-    json (1.8.6)
+    json (2.3.1)
     kramdown (1.9.0)
-    listen (3.0.5)
-      rb-fsevent (>= 0.9.3)
-      rb-inotify (>= 0.9)
+    listen (3.2.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
     middleman (4.0.0)
       coffee-script (~> 2.2)
       compass-import-once (= 1.0.5)
@@ -82,40 +80,40 @@ GEM
     middleman-syntax (2.1.0)
       middleman-core (>= 3.2)
       rouge (~> 1.0)
-    mime-types (3.0)
+    mime-types (3.3.1)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2015.1120)
-    mini_portile2 (2.0.0)
-    minitest (5.8.4)
-    nokogiri (1.6.7.2)
-      mini_portile2 (~> 2.0.0.rc2)
-    padrino-helpers (0.13.1)
+    mime-types-data (3.2020.0512)
+    mini_portile2 (2.4.0)
+    minitest (5.14.1)
+    nokogiri (1.10.10)
+      mini_portile2 (~> 2.4.0)
+    padrino-helpers (0.13.3.4)
       i18n (~> 0.6, >= 0.6.7)
-      padrino-support (= 0.13.1)
-      tilt (~> 1.4.1)
-    padrino-support (0.13.1)
+      padrino-support (= 0.13.3.4)
+      tilt (>= 1.4.1, < 3)
+    padrino-support (0.13.3.4)
       activesupport (>= 3.1)
-    rack (1.6.4)
-    rack-test (0.6.3)
-      rack (>= 1.0)
+    rack (1.6.13)
+    rack-test (1.1.0)
+      rack (>= 1.0, < 3)
     rake (10.4.2)
-    rb-fsevent (0.9.7)
-    rb-inotify (0.9.5)
-      ffi (>= 0.5.0)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
     redcarpet (3.3.4)
     rouge (1.10.1)
-    sass (3.4.22)
+    sass (3.4.25)
     sprockets (3.4.1)
       rack (> 1, < 3)
     thor (0.19.1)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     tilt (1.4.1)
-    tzinfo (1.2.2)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
     uglifier (2.7.2)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
-    xpath (2.0.0)
+    xpath (2.1.0)
       nokogiri (~> 1.3)
 
 PLATFORMS