Yes. This is a common fault.
Use a balanced fertilizer or fertilizer formulated for roses from your local garden center and apply after the first wave of flowering (be sure to follow the specified rates and method of application provided on the product label).
Make sure the soil is moist before you fertilize to avoid burning the roots. Do not fertilize late in the summer as this is the time the rose should be preparing themselves for dormancy and you do not want to create additional unnecessary new growth that will likely die back from the first hard frost.