diff --git a/CHANGELOG.md b/CHANGELOG.md
index b57a4cbf043..46568f512b8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@
 * [#7193](https://github.com/rubocop-hq/rubocop/issues/7193): Prevent `Style/PercentLiteralDelimiters` from changing `%i` literals that contain escaped delimiters. ([@buehmann][])
 * [#7590](https://github.com/rubocop-hq/rubocop/issues/7590): Fix an error for `Layout/SpaceBeforeBlockBraces` when using with `EnforcedStyle: line_count_based` of `Style/BlockDelimiters` cop. ([@koic][])
 * [#7569](https://github.com/rubocop-hq/rubocop/issues/7569): Make `Style/YodaCondition` accept `__FILE__ == $0`. ([@koic][])
+* [#7576](https://github.com/rubocop-hq/rubocop/issues/7576): Fix an error for `Gemspec/OrderedDependencies` when using a local variable in an argument of dependent gem. ([@koic][])
 
 ## 0.78.0 (2019-12-18)
 
diff --git a/lib/rubocop/cop/gemspec/ordered_dependencies.rb b/lib/rubocop/cop/gemspec/ordered_dependencies.rb
index 9c5c50876c4..1d99019cf62 100644
--- a/lib/rubocop/cop/gemspec/ordered_dependencies.rb
+++ b/lib/rubocop/cop/gemspec/ordered_dependencies.rb
@@ -98,7 +98,7 @@ def get_dependency_name(node)
         end
 
         def_node_search :dependency_declarations, <<~PATTERN
-          (send (lvar _) {:add_dependency :add_runtime_dependency :add_development_dependency} ...)
+          (send (lvar _) {:add_dependency :add_runtime_dependency :add_development_dependency} (str _) ...)
         PATTERN
       end
     end
diff --git a/spec/rubocop/cop/gemspec/ordered_dependencies_spec.rb b/spec/rubocop/cop/gemspec/ordered_dependencies_spec.rb
index 085579fd136..027ee8cf5fc 100644
--- a/spec/rubocop/cop/gemspec/ordered_dependencies_spec.rb
+++ b/spec/rubocop/cop/gemspec/ordered_dependencies_spec.rb
@@ -198,4 +198,15 @@
       RUBY
     end
   end
+
+  context 'When using a local variable in an argument of dependent gem' do
+    it 'does not register any offenses' do
+      expect_no_offenses(<<~RUBY)
+        Gem::Specification.new do |spec|
+          %w(rubocop-performance rubocop-rails).each { |dep| spec.add_dependency dep }
+          spec.add_dependency 'parser'
+        end
+      RUBY
+    end
+  end
 end