diff --git a/Gemfile.lock b/Gemfile.lock
index 2bf8307..ddb9320 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -31,12 +31,13 @@ GEM
       semver2
     jwt (1.5.6)
     mime-types (2.99.3)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.5.1)
     multi_json (1.12.2)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
-    nokogiri (1.8.1)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.11.4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     oauth2 (1.4.0)
       faraday (>= 0.8, < 0.13)
       jwt (~> 1.0)
@@ -44,6 +45,7 @@ GEM
       multi_xml (~> 0.5)
       rack (>= 1.2, < 3)
     psych (2.2.4)
+    racc (1.5.2)
     rack (2.0.3)
     rake (12.3.0)
     rdoc (6.0.1)