diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8883abc..5995fbb 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ '3.0', '3.1', '3.2' ]
+        ruby: [ '3.0', '3.1', '3.2', '3.3' ]
         rails: [ '6.1', '7.0', '7.1' ]
 
     name: SQLite / Ruby ${{ matrix.ruby }} / Rails ${{ matrix.rails }}
@@ -58,7 +58,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ '3.0', '3.1', '3.2' ]
+        ruby: [ '3.0', '3.1', '3.2', '3.3' ]
         rails: [ '6.1', '7.0', '7.1' ]
 
     name: MySQL / Ruby ${{ matrix.ruby }} / Rails ${{ matrix.rails }}
@@ -107,7 +107,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ '3.0', '3.1', '3.2' ]
+        ruby: [ '3.0', '3.1', '3.2', '3.3' ]
         rails: [ '6.1', '7.0', '7.1' ]
 
     name: PostgreSQL / Ruby ${{ matrix.ruby }} / Rails ${{ matrix.rails }}
diff --git a/lib/generators/unread/migration/migration_generator.rb b/lib/generators/unread/migration/migration_generator.rb
index e197c9b..3684340 100644
--- a/lib/generators/unread/migration/migration_generator.rb
+++ b/lib/generators/unread/migration/migration_generator.rb
@@ -13,11 +13,22 @@ def create_migration_file
     end
 
     def self.next_migration_number(dirname)
-      if ActiveRecord::Base.timestamped_migrations
+      if self.timestamped_migrations?
         Time.now.utc.strftime("%Y%m%d%H%M%S")
       else
         "%.3d" % (current_migration_number(dirname) + 1)
       end
     end
+
+    def self.timestamped_migrations?
+      (
+        ActiveRecord::Base.respond_to?(:timestamped_migrations) &&
+          ActiveRecord::Base.timestamped_migrations
+      ) ||
+        (
+          ActiveRecord.respond_to?(:timestamped_migrations) &&
+            ActiveRecord.timestamped_migrations
+        )
+    end
   end
 end
diff --git a/lib/unread/version.rb b/lib/unread/version.rb
index a8141b8..8339375 100644
--- a/lib/unread/version.rb
+++ b/lib/unread/version.rb
@@ -1,3 +1,3 @@
 module Unread
-  VERSION = '0.13.0'
+  VERSION = '0.13.1'
 end