diff --git a/Gemfile.lock b/Gemfile.lock
index d3209c5..401297c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,8 +56,8 @@ GEM
       tzinfo (~> 1.1)
     acts_as_list (0.9.19)
       activerecord (>= 3.0)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arbre (1.2.1)
       activesupport (>= 3.0.0)
     arctic_admin (3.1.1)
@@ -250,7 +250,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.0331)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.9.3)
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
@@ -285,7 +287,7 @@ GEM
       coolline (~> 0.5)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    public_suffix (3.0.3)
+    public_suffix (5.0.0)
     puma (3.12.1)
     pundit (2.0.1)
       activesupport (>= 3.0.0)