diff --git a/Gemfile.lock b/Gemfile.lock
index c245553..4e4ddbd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -49,7 +49,7 @@ GEM
       typhoeus (~> 0.7)
     html-pipeline (2.4.2)
       activesupport (>= 2)
-      nokogiri (>= 1.8.5)
+      nokogiri (>= 1.10.4)
     i18n (0.7.0)
     jekyll (3.1.6)
       colorator (~> 0.1)
@@ -97,7 +97,7 @@ GEM
     minitest (5.9.0)
     multipart-post (2.0.0)
     net-dns (0.8.0)
-    nokogiri (1.6.8)
+    nokogiri (1.10.4)
       mini_portile2 (~> 2.1.0)
       pkg-config (~> 1.1.7)
     octokit (4.3.0)