diff --git a/2015-cis198-slides/Gemfile.lock b/2015-cis198-slides/Gemfile.lock
index 44d0a1f..8a30072 100644
--- a/2015-cis198-slides/Gemfile.lock
+++ b/2015-cis198-slides/Gemfile.lock
@@ -98,12 +98,13 @@ GEM
       rb-inotify (>= 0.9)
     maruku (0.7.0)
     mercenary (0.3.5)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.0)
     minitest (5.8.3)
     multipart-post (2.0.0)
     net-dns (0.8.0)
-    nokogiri (1.10.8)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     octokit (4.2.0)
       sawyer (~> 0.6.0, >= 0.5.3)
     parslet (1.5.0)
@@ -113,6 +114,7 @@ GEM
     pygments.rb (0.6.3)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.2.0)
+    racc (1.6.0)
     rb-fsevent (0.9.6)
     rb-inotify (0.9.5)
       ffi (>= 0.5.0)