diff --git a/Gemfile.lock b/Gemfile.lock
index 425308a..29cbe1c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,7 +38,9 @@ GEM
     maruku (0.6.1)
       syntax (>= 1.0.0)
     mime-types (1.19)
-    nokogiri (1.5.9)
+    mini_portile2 (2.4.0)
+    nokogiri (1.10.7)
+      mini_portile2 (~> 2.4.0)
     posix-spawn (0.3.6)
     rack (1.4.1)
     rack-jekyll (0.3.5)