diff --git a/Gemfile.lock b/Gemfile.lock
index 783ee09..1d6b533 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,9 +42,13 @@ GEM
     libwebsocket (0.1.5)
       addressable
     mime-types (1.19)
+    mini_portile2 (2.6.1)
     multi_json (1.3.6)
     multi_xml (0.5.5)
-    nokogiri (1.5.5)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
+    racc (1.5.2)
     rack (1.4.1)
     rack-test (0.6.1)
       rack (>= 1.0)