Parliament Hill is stepping up security in 2012, with $9 million in security upgrades planned for its entrance gates.

The changes will include retractable bollards as well as vehicle barriers and security cameras at four existing vehicle entrances. Two other openings will be made smaller by restoring portions of the heritage wall, a spokesman for Public Works and Government Services Canada said in an email.

Currently, the RCMP rely on "a combination of concrete blocks, removable fences, chains and RCMP vehicles at the gates to Parliament Hill," Sebastien Bois said.

The government wants to install the barriers at all vehicle and pedestrian entry points to the Hill, according to a request for proposals posted online.

"Some bollard systems will be fixed. Other bollard systems will be retractable allowing authorized vehicles, such as parliamentary transportation buses, access to Parliament Hill," the notice says.