diff --git a/Gemfile.lock b/Gemfile.lock
index 139808a..9f07664 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,13 +13,13 @@ GEM
       oauth (>= 0.4.1)
     i18n (0.7.0)
     log4r (1.1.10)
-    mini_portile2 (2.1.0)
+    mini_portile2 (2.6.1)
     minitest (5.9.0)
-    nokogiri (1.6.8)
-      mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     oauth (0.5.1)
-    pkg-config (1.1.7)
+    racc (1.5.2)
     thread_safe (0.3.5)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)