diff --git a/Gemfile.lock b/Gemfile.lock
index b2d4fa4..f789d57 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -35,8 +35,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       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)
     apitome (0.1.0)
       kramdown
       railties
@@ -126,7 +126,9 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.0)
@@ -155,7 +157,7 @@ GEM
     pry-rescue (1.4.5)
       interception (>= 0.5)
       pry
-    public_suffix (3.0.2)
+    public_suffix (4.0.6)
     puma (3.12.4)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)