diff --git a/Gemfile.lock b/Gemfile.lock
index 9a1edbc..6c0393f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -75,13 +75,15 @@ GEM
       mini_mime (>= 0.1.1)
     method_source (0.9.0)
     mini_mime (1.0.0)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.8.0)
     minitest (5.11.3)
     multi_json (1.13.1)
     nio4r (2.3.1)
-    nokogiri (1.8.4)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     puma (3.12.0)
+    racc (1.6.0)
     rack (2.0.5)
     rack-test (0.6.3)
       rack (>= 1.0)