diff --git a/Gemfile.lock b/Gemfile.lock
index 4ea0636262..6e6fcebdcf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -188,7 +188,7 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mini_portile2 (2.1.0)
+    mini_portile2 (2.3.0)
     minitest (5.9.1)
     minitest-capybara (0.8.2)
       capybara (~> 2.2)
@@ -215,9 +215,8 @@ GEM
     multi_xml (0.5.5)
     multipart-post (2.0.0)
     mysql2 (0.3.21)
-    nokogiri (1.6.8)
-      mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
+    nokogiri (1.8.1)
+      mini_portile2 (~> 2.3.0)
     normalize-rails (4.1.1)
     oauth2 (1.2.0)
       faraday (>= 0.8, < 0.10)
@@ -237,7 +236,6 @@ GEM
       omniauth (>= 1.0.0)
     orm_adapter (0.5.0)
     pg (0.19.0)
-    pkg-config (1.1.7)
     po_to_json (1.0.1)
       json (>= 1.6.0)
     protected_attributes (1.1.3)