diff --git a/spec/components/active_record/connection_adapters/postgresql_fallback_adapter_spec.rb b/spec/components/active_record/connection_adapters/postgresql_fallback_adapter_spec.rb
index 8e2ee7d9004..4fd198095d1 100644
--- a/spec/components/active_record/connection_adapters/postgresql_fallback_adapter_spec.rb
+++ b/spec/components/active_record/connection_adapters/postgresql_fallback_adapter_spec.rb
@@ -41,8 +41,14 @@ describe ActiveRecord::ConnectionHandling do
 
   describe "#postgresql_fallback_connection" do
     it 'should return a PostgreSQL adapter' do
-      expect(ActiveRecord::Base.postgresql_fallback_connection(config))
-        .to be_an_instance_of(ActiveRecord::ConnectionAdapters::PostgreSQLAdapter)
+      begin
+        connection = ActiveRecord::Base.postgresql_fallback_connection(config)
+
+        expect(connection)
+          .to be_an_instance_of(ActiveRecord::ConnectionAdapters::PostgreSQLAdapter)
+      ensure
+        connection.disconnect!
+      end
     end
 
     context 'when master server is down' do