diff --git a/Gemfile.lock b/Gemfile.lock
index ff19ef9..ea0cccd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -264,8 +264,8 @@ GEM
       tzinfo (~> 1.1)
     acts_as_list (0.9.19)
       activerecord (>= 3.0)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     airbrussh (1.4.0)
       sshkit (>= 1.6.1, != 1.7.0)
     anchored (1.1.0)
@@ -538,7 +538,9 @@ GEM
     mime-types (3.3)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.1009)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.9.5)
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
@@ -612,7 +614,7 @@ GEM
     premailer-rails (1.10.3)
       actionmailer (>= 3)
       premailer (~> 1.7, >= 1.7.9)
-    public_suffix (4.0.1)
+    public_suffix (5.0.0)
     puma (3.12.1)
     rack (2.0.7)
     rack-attack (5.4.2)