diff --git a/Gemfile.lock b/Gemfile.lock
index 019ab5f..8c80f7e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,8 +46,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     archive-zip (0.12.0)
       io-like (~> 0.3.0)
     arel (9.0.0)
@@ -130,7 +130,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     mini_racer (0.2.6)
@@ -146,7 +148,7 @@ GEM
       hashie (>= 3.4.6, < 3.7.0)
       rack (>= 1.6.2, < 3)
     orm_adapter (0.5.0)
-    public_suffix (4.0.1)
+    public_suffix (5.0.0)
     puma (3.12.1)
     rack (2.0.8)
     rack-pjax (1.1.0)