diff --git a/Gemfile.lock b/Gemfile.lock
index ca81b4c..ecff172 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -88,11 +88,12 @@ GEM
     mime-types (3.3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.1009)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.0)
     minitest (5.14.0)
     multi_json (1.14.1)
-    nokogiri (1.10.8)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     padrino-helpers (0.12.9)
       i18n (~> 0.6, >= 0.6.7)
       padrino-support (= 0.12.9)
@@ -101,6 +102,7 @@ GEM
       activesupport (>= 3.1)
     pygments.rb (1.2.1)
       multi_json (>= 1.0.0)
+    racc (1.6.0)
     rack (1.6.12)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)