diff --git a/Gemfile.lock b/Gemfile.lock
index 5e84b84..f053694 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -72,15 +72,16 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2020.1104)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.1)
     minitest (5.14.2)
     mono_logger (1.1.0)
     multi_json (1.15.0)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
     nio4r (2.5.4)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     obf (0.9.8.36)
       CFPropertyList
       json
@@ -94,6 +95,7 @@ GEM
     prawn (2.3.0)
       pdf-core (~> 0.8.1)
       ttfunk (~> 1.6)
+    racc (1.5.2)
     rack (2.2.3)
     rack-protection (2.1.0)
       rack