diff --git a/changelog/new_add_deprecated_attributes.md b/changelog/new_add_deprecated_attributes.md
new file mode 100644
index 00000000000..35d2e374be2
--- /dev/null
+++ b/changelog/new_add_deprecated_attributes.md
@@ -0,0 +1 @@
+* [#10245](https://github.com/rubocop/rubocop/pull/10245): Add specification_version and rubygems_version to `Gemspec/DeprecatedAttributeAssignment`. ([@kaitielth][])
diff --git a/lib/rubocop/cop/gemspec/deprecated_attribute_assignment.rb b/lib/rubocop/cop/gemspec/deprecated_attribute_assignment.rb
index 938d9f872f4..f68ea281c5d 100644
--- a/lib/rubocop/cop/gemspec/deprecated_attribute_assignment.rb
+++ b/lib/rubocop/cop/gemspec/deprecated_attribute_assignment.rb
@@ -70,7 +70,7 @@ def node_and_method_name(node, attribute)
         end
 
         def use_deprecated_attributes?(node, block_parameter)
-          %i[test_files date].each do |attribute|
+          %i[test_files date specification_version rubygems_version].each do |attribute|
             node, method_name = node_and_method_name(node, attribute)
             unless node.send_type? && node.receiver&.source == block_parameter &&
                    node.method?(method_name)
diff --git a/spec/rubocop/cop/gemspec/deprecated_attribute_assignment_spec.rb b/spec/rubocop/cop/gemspec/deprecated_attribute_assignment_spec.rb
index 6e1ecfa1f43..45df9c94801 100644
--- a/spec/rubocop/cop/gemspec/deprecated_attribute_assignment_spec.rb
+++ b/spec/rubocop/cop/gemspec/deprecated_attribute_assignment_spec.rb
@@ -92,6 +92,8 @@
   end
 
   it_behaves_like 'deprecated attributes', 'date', "Time.now.strftime('%Y-%m-%d')"
+  it_behaves_like 'deprecated attributes', 'rubygems_version', '2.5'
+  it_behaves_like 'deprecated attributes', 'specification_version', '2.5'
   it_behaves_like 'deprecated attributes', 'test_files', "Dir.glob('test/**/*')"
   it_behaves_like 'deprecated attributes with addition', 'test_files', "Dir.glob('test/**/*')"
 end