diff --git a/guides/Gemfile b/guides/Gemfile
index 0a94c70e262..ae2c93a8763 100644
--- a/guides/Gemfile
+++ b/guides/Gemfile
@@ -4,7 +4,7 @@ source "https://rubygems.org"
 
 gem "middleman", "~> 4.2"
 gem "oga", "~> 2.14"
-gem "nokogiri", "~>1.10.4"
+gem "nokogiri", "~>1.10.8"
 gem "middleman-s3_sync"
 gem "redcarpet"
 gem "rack", ">= 2.0.6"
diff --git a/guides/Gemfile.lock b/guides/Gemfile.lock
index da337275a55..7ee87e8a686 100644
--- a/guides/Gemfile.lock
+++ b/guides/Gemfile.lock
@@ -106,7 +106,7 @@ GEM
     mini_portile2 (2.4.0)
     minitest (5.11.3)
     multi_json (1.13.1)
-    nokogiri (1.10.4)
+    nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     oga (2.15)
       ast
@@ -148,7 +148,7 @@ PLATFORMS
 DEPENDENCIES
   middleman (~> 4.2)
   middleman-s3_sync
-  nokogiri (~> 1.10.4)
+  nokogiri (~> 1.10.8)
   oga (~> 2.14)
   rack (>= 2.0.6)
   redcarpet