diff --git a/Gemfile b/Gemfile
index 8ba980b..0840b25 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ gem 'eventmachine', '~> 1.2.7'
 gem 'simpleidn', '~> 0.2.1' # For punycode
 
 # database
-gem 'activerecord', '~> 7.2', '>= 7.2.2.2'
+gem 'activerecord', '~> 8.0'
 gem 'daemons', '~> 1.4.1'
 gem 'dotenv'
 gem 'pg', '~> 1.5.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 0ecaa1b..34d1b9f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,13 +1,13 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (7.2.2.2)
-      activesupport (= 7.2.2.2)
-    activerecord (7.2.2.2)
-      activemodel (= 7.2.2.2)
-      activesupport (= 7.2.2.2)
+    activemodel (8.0.3)
+      activesupport (= 8.0.3)
+    activerecord (8.0.3)
+      activemodel (= 8.0.3)
+      activesupport (= 8.0.3)
       timeout (>= 0.4.0)
-    activesupport (7.2.2.2)
+    activesupport (8.0.3)
       base64
       benchmark (>= 0.3)
       bigdecimal
@@ -19,13 +19,14 @@ GEM
       minitest (>= 5.1)
       securerandom (>= 0.3)
       tzinfo (~> 2.0, >= 2.0.5)
+      uri (>= 0.13.1)
     ast (2.4.2)
     base64 (0.3.0)
     benchmark (0.4.1)
-    bigdecimal (3.2.2)
+    bigdecimal (3.2.3)
     coderay (1.1.3)
     concurrent-ruby (1.3.5)
-    connection_pool (2.5.3)
+    connection_pool (2.5.4)
     daemons (1.4.1)
     docile (1.4.1)
     dotenv (3.1.7)
@@ -84,13 +85,14 @@ GEM
     unicode-display_width (3.1.4)
       unicode-emoji (~> 4.0, >= 4.0.4)
     unicode-emoji (4.0.4)
+    uri (1.0.3)
 
 PLATFORMS
   aarch64-linux
   ruby
 
 DEPENDENCIES
-  activerecord (~> 7.2, >= 7.2.2.2)
+  activerecord (~> 8.0)
   daemons (~> 1.4.1)
   dotenv
   eventmachine (~> 1.2.7)