diff --git a/Gemfile.lock b/Gemfile.lock
index adafd9e..1195bdb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -97,15 +97,17 @@ GEM
       rails (>= 3.0.0)
     method_source (0.9.0)
     mini_mime (1.0.0)
-    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 (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     pg (0.21.0)
     public_suffix (3.0.1)
     puma (3.11.0)
+    racc (1.6.0)
     rack (2.0.3)
     rack-test (0.8.2)
       rack (>= 1.0, < 3)