diff --git a/active_presenter.gemspec b/active_presenter.gemspec
index f5f2588..54499bf 100644
--- a/active_presenter.gemspec
+++ b/active_presenter.gemspec
@@ -35,7 +35,7 @@ Gem::Specification.new do |s|
     'test/lint_test.rb',
     'test/test_helper.rb'
   ]
-  s.add_runtime_dependency('activerecord', ['>= 3.2', '< 7.0'])
+  s.add_runtime_dependency('activerecord', ['>= 3.2', '< 8.0'])
   s.add_development_dependency('rake', ['>= 12.0'])
   s.add_development_dependency('rspec', ['>= 3.0.0'])
   s.add_development_dependency('sqlite3', ['>= 1.3.5'])
diff --git a/lib/active_presenter/base.rb b/lib/active_presenter/base.rb
index 3ed9543..11d2ff5 100644
--- a/lib/active_presenter/base.rb
+++ b/lib/active_presenter/base.rb
@@ -264,11 +264,11 @@ def attribute_prefix(type)
     end
 
     def merge_errors(presented_inst, type)
-      presented_inst.errors.each do |att,msg|
-        if att == :base
-          errors.add(type, msg)
+      presented_inst.errors.each do |error|
+        if error.attribute == :base
+          errors.add(type, error.message)
         else
-          errors.add(attribute_prefix(type)+att.to_s, msg)
+          errors.add(attribute_prefix(type) + error.attribute.to_s, error.message)
         end
       end
     end