diff --git a/CHANGELOG.md b/CHANGELOG.md
index 892ad6b9cb2..5c1a02b4919 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@
 * [#6914](https://github.com/rubocop-hq/rubocop/issues/6914): [Fix #6914] Fix an error for `Rails/RedundantAllowNil` when with interpolations. ([@Blue-Pix][])
 * [#6941](https://github.com/rubocop-hq/rubocop/issues/6941): Add missing absence validations to `Rails/Validation`. ([@jmanian][])
 * [#6926](https://github.com/rubocop-hq/rubocop/issues/6926): [Fix #6926] Allow nil values to unset config defaults. ([@dduugg][])
+* [#6946](https://github.com/rubocop-hq/rubocop/pull/6946): Allow `Rails/ReflectionClassName` to use string interpolation for `class_name`. ([@r7kamura][])
 
 ### Changes
 
diff --git a/lib/rubocop/cop/rails/reflection_class_name.rb b/lib/rubocop/cop/rails/reflection_class_name.rb
index 1bfc2f5c099..1af134c949a 100644
--- a/lib/rubocop/cop/rails/reflection_class_name.rb
+++ b/lib/rubocop/cop/rails/reflection_class_name.rb
@@ -21,7 +21,7 @@ class ReflectionClassName < Cop
         PATTERN
 
         def_node_search :reflection_class_name, <<-PATTERN
-          (pair (sym :class_name) [!str !sym])
+          (pair (sym :class_name) [!dstr !str !sym])
         PATTERN
 
         def on_send(node)
diff --git a/spec/rubocop/cop/rails/reflection_class_name_spec.rb b/spec/rubocop/cop/rails/reflection_class_name_spec.rb
index 0da8e640d17..ea08fcedf63 100644
--- a/spec/rubocop/cop/rails/reflection_class_name_spec.rb
+++ b/spec/rubocop/cop/rails/reflection_class_name_spec.rb
@@ -35,6 +35,12 @@
     end
   end
 
+  it 'does not register an offense when using string with interpolation' do
+    expect_no_offenses(<<-'RUBY'.strip_indent)
+      has_many :accounts, class_name: "#{prefix}Account"
+    RUBY
+  end
+
   it 'does not register an offense when using `foreign_key :account_id`' do
     expect_no_offenses(<<-RUBY.strip_indent)
       has_many :accounts, class_name: 'Account', foreign_key: :account_id