diff --git a/Gemfile b/Gemfile
index a8115db..b89ab91 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,4 +9,5 @@ gem "kramdown", ">= 2.3.0"
 # security vulnerability - https://github.com/advisories/GHSA-j96r-xvjq-r9pg
 gem "activesupport", ">= 4.1.11"
 
-
+# security vulnerability - https://github.com/advisories/GHSA-vr8q-g5c7-m54m
+gem "nokogiri", ">= 1.11.0.rc4"
diff --git a/Gemfile.lock b/Gemfile.lock
index 1cb4e74..c5b1967 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -203,21 +203,23 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.0)
     minima (2.5.1)
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
     minitest (5.14.2)
     multipart-post (2.1.1)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.0.rc4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     octokit (4.20.0)
       faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (3.1.1)
+    racc (1.5.2)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -260,6 +262,7 @@ DEPENDENCIES
   activesupport (>= 4.1.11)
   github-pages
   kramdown (>= 2.3.0)
+  nokogiri (>= 1.11.0.rc4)
   tzinfo-data
 
 BUNDLED WITH