diff --git a/Gemfile.lock b/Gemfile.lock
index 15da9e4..1df4b0d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -35,8 +35,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     arel (6.0.4)
     autoprefixer-rails (7.1.4.1)
       execjs
@@ -160,7 +160,9 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (0.1.4)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
@@ -203,7 +205,7 @@ GEM
       method_source (~> 0.9.0)
     pry-rails (0.3.6)
       pry (>= 0.10.4)
-    public_suffix (3.0.0)
+    public_suffix (4.0.6)
     puma (3.10.0)
     rack (1.6.10)
     rack-pjax (1.0.0)