diff --git a/Gemfile.lock b/Gemfile.lock
index ef7ae4a..eb9dfa7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -65,11 +65,13 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
     mini_mime (1.0.0)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.6.1)
     minitest (5.11.3)
     netrc (0.11.0)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
+    racc (1.5.2)
     rack (1.6.9)
     rack-test (0.6.3)
       rack (>= 1.0)