diff --git a/Gemfile.lock b/Gemfile.lock
index ad1c0d38..284bbcae 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -172,7 +172,7 @@ GEM
     mocha (1.13.0)
     mysql2 (0.5.3)
     nio4r (2.5.8)
-    nokogiri (1.13.3)
+    nokogiri (1.13.4)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     parallel (1.22.1)