Bikes on bikes on bikes. (Photo by Astrid Riecken For The Washington Post)

This post has been updated.

If you want to join Capital Bikeshare, you will probably have to wait.

The program’s Web site says it is dealing with a shipment problem and has run out of member keys. You need the key to unlock a bike at any of the more than 300 Capital Bikeshare stations in the network.

“Due to issues with our supplier, we are currently out of Capital Bikeshare member keys,” a note on the program’s “sign up” page says. “We hope to have this issue resolved soon, but if you’d like to be notified when we have keys to ship please email customerservice@capitalbikeshare.com. We apologize for the inconvenience.”

Kimberly Lucas, the Capital Bikeshare program manager with the District Department of Transportation said a shipment of new keys will arrive  the week of July 7. She said new memberships are up this year and Capital Bikeshare had not been able to order more keys.

Capital Bikeshare generally receives a number of keys each time it gets new bikes and stations, but orders have been on hold in recent months.

Capital Bikeshare, a joint program of the District, Alexandria, and Arlington and Montgomery counties, has been unable to buy new bikes and stations since the system’s sole bike equipment provider filed for bankruptcy earlier this year.  Alta Bicycle Share, the company that operates Capital Bikeshare, said in April that it was working to resume orders, and had identified other suppliers.

Meanwhile, the rapidly growing bike network appears to have come to a standstill.  College Park, which was hoping to join  this spring, has not launched yet, and the District, Alexandria and Montgomery said they have not been able to get any new orders.

To join Capital Bikeshare, you can sign up online or go to any of the commuter stores across the region that sell memberships.  If you sign up online, Capital Bikeshare sends you a key and you have access to the thousands of bikes in the network.

Tuesday morning, some commuter stores in Arlington said they still had a few member keys available for sale.