diff --git a/Gemfile.lock b/Gemfile.lock
index 6ced855..9c06e78 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -64,9 +64,11 @@ GEM
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
     mime-types (1.17.2)
+    mini_portile2 (2.4.0)
     multi_json (1.0.4)
-    nokogiri (1.5.0)
-    nokogiri (1.5.0-java)
+    nokogiri (1.10.8)
+      mini_portile2 (~> 2.4.0)
+    nokogiri (1.10.8-java)
     polyglot (0.3.4)
     rack (1.3.6)
     rack-cache (1.1)