diff --git a/Gemfile.lock b/Gemfile.lock
index 6b18067..06e3bdd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,24 +30,26 @@ GEM
     json (1.8.6-java)
     jwt (1.5.4)
     metaclass (0.0.4)
-    mini_portile2 (2.1.0)
+    mini_portile2 (2.8.0)
     mocha (1.1.0)
       metaclass (~> 0.0.1)
     multi_json (1.12.1)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
-    nokogiri (1.6.8)
-      mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
-    nokogiri (1.6.8-java)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    nokogiri (1.13.6-java)
+      racc (~> 1.4)
     oauth2 (1.2.0)
       faraday (>= 0.8, < 0.10)
       jwt (~> 1.0)
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (>= 1.2, < 3)
-    pkg-config (1.1.7)
     power_assert (0.3.0)
+    racc (1.6.0)
+    racc (1.6.0-java)
     rack (1.6.4)
     rake (11.2.2)
     rdoc (4.2.2)