diff --git a/Gemfile.lock b/Gemfile.lock
index f220a75..556e5da 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -141,9 +141,11 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.8.0)
     minitest (5.11.3)
     multi_json (1.13.1)
     multi_xml (0.6.0)
@@ -153,8 +155,9 @@ GEM
     net-ssh (5.0.2)
     netrc (0.11.0)
     nio4r (2.3.1)
-    nokogiri (1.8.5)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.13.5)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     oauth (0.5.4)
     oauth2 (1.4.1)
       faraday (>= 0.8, < 0.16.0)
@@ -185,6 +188,7 @@ GEM
       byebug (~> 10.0)
       pry (~> 0.10)
     public_suffix (3.0.3)
+    racc (1.6.0)
     rack (2.0.6)
     rack-protection (2.0.4)
       rack