diff --git a/Gemfile b/Gemfile
index a2ae068..199fe4b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -71,7 +71,7 @@ gem 'net-ssh', git: 'https://github.com/romkey/net-ssh-fixed'
 gem 'brakeman', require: false
 gem 'rubocop', require: false
 gem 'rubocop-rails', require: false
-gem 'nokogiri', '~> 1.14.3'
+gem 'nokogiri', '~> 1.15.6'
 gem 'net-smtp'
 gem 'net-pop'
 gem 'net-imap'
diff --git a/Gemfile.lock b/Gemfile.lock
index d4a1780..186e449 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -176,11 +176,11 @@ GEM
     net-smtp (0.3.3)
       net-protocol
     nio4r (2.5.9)
-    nokogiri (1.14.5-aarch64-linux)
+    nokogiri (1.15.6-aarch64-linux)
       racc (~> 1.4)
-    nokogiri (1.14.5-arm64-darwin)
+    nokogiri (1.15.6-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.14.5-x86_64-linux)
+    nokogiri (1.15.6-x86_64-linux)
       racc (~> 1.4)
     orm_adapter (0.5.0)
     parallel (1.23.0)
@@ -192,7 +192,7 @@ GEM
     public_suffix (5.0.3)
     puma (5.6.7)
       nio4r (~> 2.0)
-    racc (1.7.1)
+    racc (1.7.3)
     rack (2.2.8)
     rack-test (2.1.0)
       rack (>= 1.3)
@@ -351,7 +351,7 @@ DEPENDENCIES
   net-pop
   net-smtp
   net-ssh!
-  nokogiri (~> 1.14.3)
+  nokogiri (~> 1.15.6)
   pg
   puma (~> 5.6.7)
   rails (~> 6.1.7.3)