diff --git a/Gemfile.lock b/Gemfile.lock
index b2ec1c6..4e8f32f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -53,20 +53,24 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.0)
     minitest (5.11.3)
     mongo (2.6.4)
       bson (>= 4.3.0, < 5.0.0)
     multi_xml (0.6.0)
     mustermann (1.0.3)
-    nokogiri (1.10.1-x64-mingw32)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.13.4)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    nokogiri (1.13.4-x64-mingw32)
+      racc (~> 1.4)
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     pry-byebug (3.6.0)
       byebug (~> 10.0)
       pry (~> 0.10)
+    racc (1.6.0)
     rack (2.0.6)
     rack-protection (2.0.5)
       rack
@@ -91,6 +95,7 @@ GEM
       thread_safe (~> 0.1)
 
 PLATFORMS
+  ruby
   x64-mingw32
 
 DEPENDENCIES