diff --git a/Gemfile.lock b/Gemfile.lock
index 76f3497..7a066c1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -71,14 +71,16 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mini_portile2 (2.2.0)
+    mini_portile2 (2.8.4)
     minitest (5.10.2)
     multi_json (1.11.2)
-    nokogiri (1.8.0)
-      mini_portile2 (~> 2.2.0)
+    nokogiri (1.15.4)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
     pg (0.18.4)
     postgresql (1.0.0)
       pg
+    racc (1.7.1)
     rack (1.6.8)
     rack-test (0.6.3)
       rack (>= 1.0)