diff --git a/Gemfile.lock b/Gemfile.lock
index 04909aa..002568e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -65,8 +65,8 @@ 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)
     airbrussh (1.3.0)
       sshkit (>= 1.6.1, != 1.7.0)
     archive-zip (0.11.0)
@@ -174,7 +174,9 @@ GEM
       mimemagic (~> 0.3.2)
     method_source (0.9.0)
     mime-types (2.99.3)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
@@ -228,7 +230,7 @@ GEM
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.0.2)
+    public_suffix (4.0.6)
     puma (3.11.4)
     rack (2.0.5)
     rack-test (1.0.0)