diff --git a/Gemfile.lock b/Gemfile.lock
index 1c2ac90..55c06cf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -114,14 +114,17 @@ 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 (0.1.4)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.8.0)
     minitest (5.10.3)
     multi_json (1.12.2)
     nio4r (2.1.0)
-    nokogiri (1.8.1)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     paperclip (5.1.0)
       activemodel (>= 4.2.0)
       activesupport (>= 4.2.0)
@@ -146,6 +149,7 @@ GEM
       pry (>= 0.10.4)
     public_suffix (3.0.0)
     puma (3.10.0)
+    racc (1.6.0)
     rack (2.0.3)
     rack-test (0.7.0)
       rack (>= 1.0, < 3)