diff --git a/Gemfile.lock b/Gemfile.lock
index a629083..65db78b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -80,7 +80,7 @@ GEM
     bootstrap (4.0.0.alpha3.1)
       autoprefixer-rails (>= 6.0.3)
       sass (>= 3.4.19)
-    builder (3.2.2)
+    builder (3.2.4)
     byebug (9.0.5)
     coffee-rails (4.2.1)
       coffee-script (>= 2.2.0)
@@ -89,7 +89,8 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.10.0)
-    concurrent-ruby (1.0.2)
+    concurrent-ruby (1.1.9)
+    crass (1.0.6)
     debug_inspector (0.0.2)
     domain_name (0.5.20160615)
       unf (>= 0.0.5, < 1.0.0)
@@ -104,7 +105,8 @@ GEM
       activesupport (>= 4.1.0)
     http-cookie (1.0.2)
       domain_name (~> 0.5)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jbuilder (2.6.0)
       activesupport (>= 3.0.0, < 5.1)
       multi_json (~> 1.2)
@@ -118,7 +120,8 @@ GEM
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    loofah (2.0.3)
+    loofah (2.14.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.4)
       mime-types (>= 1.16, < 4)
@@ -128,20 +131,20 @@ GEM
     method_source (0.8.2)
     mime-types (2.99.2)
     mini_magick (4.5.1)
-    mini_portile2 (2.1.0)
-    minitest (5.9.0)
+    mini_portile2 (2.8.0)
+    minitest (5.15.0)
     multi_json (1.12.1)
     mustermann (0.4.0)
       tool (~> 0.2)
     netrc (0.11.0)
     nio4r (1.2.1)
-    nokogiri (1.6.8)
-      mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
+    nokogiri (1.13.3)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     pg (0.18.4)
-    pkg-config (1.1.7)
     puma (3.6.0)
-    rack (2.0.1)
+    racc (1.6.0)
+    rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.0)
@@ -161,11 +164,11 @@ GEM
       actionpack (~> 5.x)
       actionview (~> 5.x)
       activesupport (~> 5.x)
-    rails-dom-testing (2.0.1)
-      activesupport (>= 4.2.0, < 6.0)
-      nokogiri (~> 1.6.0)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
+    rails-dom-testing (2.0.3)
+      activesupport (>= 4.2.0)
+      nokogiri (>= 1.6)
+    rails-html-sanitizer (1.4.2)
+      loofah (~> 2.3)
     railties (5.0.0)
       actionpack (= 5.0.0)
       activesupport (= 5.0.0)
@@ -213,13 +216,13 @@ GEM
       sprockets (>= 3.0.0)
     sqlite3 (1.3.11)
     thor (0.19.1)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     tilt (2.0.5)
     tool (0.2.3)
     turbolinks (5.0.1)
       turbolinks-source (~> 5)
     turbolinks-source (5.0.0)
-    tzinfo (1.2.2)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
     uglifier (3.0.1)
       execjs (>= 0.3.0, < 3)