diff --git a/Gemfile.lock b/Gemfile.lock
index ab09278c..f482ab40 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,8 +52,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (9.0.0)
     authlogic (4.1.1)
       activerecord (>= 4.2, < 5.3)
@@ -155,7 +155,9 @@ 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 (1.0.0)
     mini_portile2 (2.3.0)
     mini_racer (0.1.15)
@@ -173,7 +175,7 @@ GEM
       websocket-driver (>= 0.2.0)
     popper_js (1.12.9)
     psych (3.0.2)
-    public_suffix (3.0.2)
+    public_suffix (5.0.0)
     puma (3.11.4)
     rack (2.0.5)
     rack-test (1.0.0)