diff --git a/Gemfile.lock b/Gemfile.lock
index 66393c0..51d1bf0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -91,9 +91,11 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.1)
     minitest (5.11.3)
     msgpack (1.2.6)
     multi_json (1.13.1)
@@ -104,10 +106,12 @@ GEM
       http-2 (= 0.9.0)
     netrc (0.11.0)
     nio4r (2.3.1)
-    nokogiri (1.10.0)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.5)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     pg (1.1.4)
     puma (3.12.0)
+    racc (1.5.2)
     rack (2.0.6)
     rack-cors (0.4.1)
     rack-test (1.1.0)