diff --git a/Gemfile.lock b/Gemfile.lock
index c15de9f..034c091 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,8 +38,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       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)
     annotate (2.7.2)
       activerecord (>= 3.2, < 6.0)
       rake (>= 10.4, < 13.0)
@@ -140,7 +140,9 @@ 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 (1.0.0)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
@@ -166,7 +168,7 @@ GEM
       method_source (~> 0.9.0)
     pry-rails (0.3.6)
       pry (>= 0.10.4)
-    public_suffix (3.0.2)
+    public_suffix (4.0.6)
     puma (3.11.3)
     rack (2.0.4)
     rack-livereload (0.3.16)