diff --git a/Gemfile.lock b/Gemfile.lock
index 356adb2..6fc6414 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,8 +42,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     amq-protocol (2.3.0)
     annotate (2.7.3)
       activerecord (>= 3.2, < 6.0)
@@ -131,7 +131,9 @@ GEM
       mimemagic (~> 0.3.2)
     memoist (0.16.0)
     method_source (0.9.0)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
     mini_racer (0.1.15)
@@ -156,7 +158,7 @@ GEM
     pry-byebug (3.6.0)
       byebug (~> 10.0)
       pry (~> 0.10)
-    public_suffix (3.0.2)
+    public_suffix (5.0.0)
     puma (3.11.4)
     rack (2.0.5)
     rack-accept (0.4.5)