diff --git a/Gemfile.lock b/Gemfile.lock
index c04678413..a3dfdd93e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -48,7 +48,7 @@ GEM
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
     multipart-post (2.0.0)
-    nokogiri (1.8.2)
+    nokogiri (1.8.4)
       mini_portile2 (~> 2.3.0)
     octokit (4.9.0)
       sawyer (~> 0.8.0, >= 0.5.3)