diff --git a/Gemfile.lock b/Gemfile.lock
index 6028263..16fdb3c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -78,8 +78,10 @@ GEM
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
     mime-types (1.19)
+    mini_portile2 (2.4.0)
     multi_json (1.3.6)
-    nokogiri (1.5.5)
+    nokogiri (1.10.4)
+      mini_portile2 (~> 2.4.0)
     pg (0.14.0)
     polyglot (0.3.3)
     rack (1.4.1)