diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index bf7caf09ae..46df9e32c1 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,7 @@
+*   Remove deprecated `ActiveRecord::ConnectionAdapters::PostgreSQLAdapter#supports_ranges?`.
+
+    *Rafael Mendonça França*
+
 *   Remove deprecated `ActiveRecord::Base#update_attributes` and `ActiveRecord::Base#update_attributes!`.
 
     *Rafael Mendonça França*
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
index adce0272f0..8e48d02e33 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
@@ -345,11 +345,6 @@ module ActiveRecord
         true
       end
 
-      def supports_ranges?
-        true
-      end
-      deprecate :supports_ranges?
-
       def supports_materialized_views?
         true
       end
diff --git a/activerecord/test/cases/adapters/postgresql/connection_test.rb b/activerecord/test/cases/adapters/postgresql/connection_test.rb
index 8c417b8036..f863233e06 100644
--- a/activerecord/test/cases/adapters/postgresql/connection_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/connection_test.rb
@@ -234,10 +234,6 @@ module ActiveRecord
       end
     end
 
-    def test_supports_ranges_is_deprecated
-      assert_deprecated { @connection.supports_ranges? }
-    end
-
     private
       def with_warning_suppression
         log_level = @connection.client_min_messages
diff --git a/guides/source/6_1_release_notes.md b/guides/source/6_1_release_notes.md
index 6c23c67cbc..4db2717893 100644
--- a/guides/source/6_1_release_notes.md
+++ b/guides/source/6_1_release_notes.md
@@ -149,6 +149,8 @@ Please refer to the [Changelog][active-record] for detailed changes.
 
 ### Removals
 
+*   Remove deprecated `ActiveRecord::ConnectionAdapters::PostgreSQLAdapter#supports_ranges?`.
+
 *   Remove deprecated `ActiveRecord::Base#update_attributes` and `ActiveRecord::Base#update_attributes!`.
 
 *   Remove deprecated `migrations_path` argument in