diff --git a/Gemfile.lock b/Gemfile.lock
index 85d99c2..55a8a4d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -37,7 +37,7 @@ GEM
       json (>= 1.7)
       mime-types (>= 1.16)
     coderay (1.1.0)
-    crass (0.2.1)
+    crass (1.0.6)
     daemons (1.1.9)
     dalli (2.7.2)
     database_cleaner (1.3.0)
@@ -65,16 +65,16 @@ GEM
     method_source (0.8.2)
     mime-types (2.4.3)
     mini_magick (4.0.1)
-    mini_portile (0.6.1)
+    mini_portile2 (2.4.0)
     minitest (2.6.2)
     multi_json (1.10.1)
     multipart-post (2.0.0)
     mysql2 (0.3.17)
     netrc (0.8.0)
-    nokogiri (1.6.5)
-      mini_portile (~> 0.6.0)
-    nokogumbo (1.1.12)
-      nokogiri
+    nokogiri (1.10.9)
+      mini_portile2 (~> 2.4.0)
+    nokogumbo (2.0.2)
+      nokogiri (~> 1.8, >= 1.8.4)
     padrino-core (0.11.3)
       activesupport (>= 3.1, < 4.0)
       http_router (~> 0.11.0)
@@ -94,24 +94,24 @@ GEM
       slop (~> 3.4)
     pry-padrino (0.1.2)
       pry (>= 0.8)
-    rack (1.5.2)
+    rack (1.6.13)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.2)
       rack (>= 1.0)
-    rainbows (4.6.2)
+    rainbows (4.7.0)
       kgio (~> 2.5)
       rack (~> 1.1)
       unicorn (~> 4.8)
-    raindrops (0.13.0)
+    raindrops (0.19.1)
     rake (10.4.0)
     rest-client (1.7.2)
       mime-types (>= 1.16, < 3.0)
       netrc (~> 0.7)
-    sanitize (3.0.3)
-      crass (~> 0.2.0)
-      nokogiri (>= 1.4.4)
-      nokogumbo (= 1.1.12)
+    sanitize (5.2.1)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.8.0)
+      nokogumbo (~> 2.0)
     sinatra (1.4.5)
       rack (~> 1.4)
       rack-protection (~> 1.4)
@@ -124,15 +124,15 @@ GEM
     thor (0.17.0)
     tilt (1.3.7)
     tzinfo (0.3.42)
-    unicorn (4.8.3)
+    unicorn (4.9.0)
       kgio (~> 2.6)
       rack
       raindrops (~> 0.7)
     url_mount (0.2.1)
       rack
     will_paginate (3.0.7)
-    zbatery (4.2.0)
-      rainbows (~> 4.6)
+    zbatery (4.0.0)
+      rainbows (~> 4.0)
 
 PLATFORMS
   ruby