diff --git a/Gemfile b/Gemfile
index ebd8d8c..dc67f42 100644
--- a/Gemfile
+++ b/Gemfile
@@ -73,7 +73,7 @@ end
 gem 'settingslogic'
 gem 'country_select'
 gem 'slim'
-gem 'nokogiri', '~> 1.10.8'
+gem 'nokogiri', '~> 1.15.4'
 gem "ffi", ">= 1.9.24"
 gem 'write_xlsx'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 58e2114..4021f52 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -189,7 +189,7 @@ GEM
     mime-types-data (3.2023.0218.1)
     mini_magick (4.9.4)
     mini_mime (1.0.1)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.4)
     minitest (5.19.0)
     money (6.10.1)
       i18n (>= 0.6.4, < 1.0)
@@ -200,8 +200,9 @@ GEM
       net-ssh (>= 2.6.5)
     net-ssh (4.2.0)
     nio4r (2.3.1)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.15.4)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
     notiffany (0.1.1)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -244,6 +245,7 @@ GEM
       pry (>= 0.10.4)
     public_suffix (3.0.1)
     puma (3.11.0)
+    racc (1.7.1)
     rack (2.2.8)
     rack-protection (3.0.6)
       rack
@@ -436,7 +438,7 @@ DEPENDENCIES
   jquery-ui-rails
   letter_opener
   mini_magick
-  nokogiri (~> 1.10.8)
+  nokogiri (~> 1.15.4)
   omniauth
   omniauth-github
   omniauth-twitter (~> 1.4)