diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 124b80f..5852e06 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -110,8 +110,8 @@ GEM
     minitest (5.10.1)
     multipart-post (2.0.0)
     net-dns (0.8.0)
-    nokogiri (1.7.0.1)
-      mini_portile2 (~> 2.1.0)
+    nokogiri (1.10.3)
+      mini_portile2 (~> 2.4.0)
     octokit (4.6.2)
       sawyer (~> 0.8.0, >= 0.5.3)
     pathutil (0.14.0)