diff --git a/Gemfile.lock b/Gemfile.lock
index 613c47b0c..21a01f9dd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,8 +42,8 @@ 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 (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
     arel (6.0.4)
     bson (4.3.0)
     bson_ext (1.5.1)
@@ -70,7 +70,7 @@ GEM
     crass (1.0.3)
     domain_name (0.5.20170404)
       unf (>= 0.0.5, < 1.0.0)
-    dragonfly (1.1.4)
+    dragonfly (1.4.0)
       addressable (~> 2.3)
       multi_json (~> 1.0)
       rack (>= 1.3)
@@ -93,7 +93,9 @@ GEM
     mail (2.7.0)
       mini_mime (>= 0.1.1)
     mime-types (2.99.3)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.8.0)
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
@@ -111,7 +113,7 @@ GEM
     mongoid-paperclip (0.0.11)
       mongoid
       paperclip (>= 2.3.6, != 4.3.0)
-    multi_json (1.13.1)
+    multi_json (1.15.0)
     mynyml-redgreen (0.7.1)
       term-ansicolor (>= 1.0.4)
     netrc (0.11.0)
@@ -125,8 +127,8 @@ GEM
       cocaine (~> 0.5.5)
       mime-types
       mimemagic (~> 0.3.0)
-    public_suffix (3.0.2)
-    rack (1.6.9)
+    public_suffix (4.0.6)
+    rack (1.6.13)
     rack-protection (1.5.4)
       rack
     rack-test (0.6.3)