diff --git a/Gemfile.lock b/Gemfile.lock
index 9bdc705..2d635ed 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -47,13 +47,15 @@ GEM
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
     mini_mime (1.0.1)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.6.1)
     multi_json (1.13.1)
     multi_test (0.1.2)
     mustermann (1.0.3)
-    nokogiri (1.8.4)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     public_suffix (3.0.3)
+    racc (1.5.2)
     rack (2.0.5)
     rack-protection (2.0.3)
       rack