diff --git a/Gemfile.lock b/Gemfile.lock
index 3bb6be87..60149186 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,13 +45,16 @@ GEM
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
     methodchain (0.4.2)
-    mime-types (1.17.2)
+    mime-types (1.25.1)
+    mini_portile2 (2.8.4)
     minitest (2.4.0)
     multi_json (1.1.0)
     multipart-post (2.0.0)
     mustache (0.99.4)
     mysql2 (0.3.11)
-    nokogiri (1.5.0)
+    nokogiri (1.15.4)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
     open4 (1.0.1)
     pathological (0.2.4)
     pinion (0.3.0)
@@ -59,10 +62,11 @@ GEM
     polyglot (0.3.2)
     pony (1.3)
       mail (> 2.0)
-    posix-spawn (0.3.6)
+    posix-spawn (0.3.15)
     pygments.rb (0.3.1)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.1.0)
+    racc (1.7.1)
     rack (1.4.1)
     rack-protection (1.2.0)
       rack