diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index bfd9eb6..534ce78 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -91,16 +91,14 @@ GEM
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9.7)
     mercenary (0.3.6)
-    mini_portile2 (2.1.0)
+    mini_portile2 (2.4.0)
     minitest (5.10.1)
     multipart-post (2.0.0)
     net-dns (0.8.0)
-    nokogiri (1.6.8)
-      mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
+    nokogiri (1.10.4)
+      mini_portile2 (~> 2.4.0)
     octokit (4.3.0)
       sawyer (~> 0.7.0, >= 0.5.3)
-    pkg-config (1.1.7)
     public_suffix (1.5.3)
     rb-fsevent (0.9.8)
     rb-inotify (0.9.7)