diff --git a/Gemfile.lock b/Gemfile.lock
index 93ae981..ea3284b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -157,7 +157,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
     mini_mime (1.0.1)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.8.0)
     minitest (5.11.3)
     minitest-rails (3.0.0)
       minitest (~> 5.8)
@@ -170,11 +170,13 @@ GEM
     multi_json (1.13.1)
     multi_test (0.1.2)
     nio4r (2.3.1)
-    nokogiri (1.8.5)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     populator (1.0.0)
     public_suffix (3.0.3)
     puma (3.12.0)
+    racc (1.6.0)
     rack (2.0.6)
     rack-contrib (2.1.0)
       rack (~> 2.0)