The average contract interest rate for 30-year fixed-rate mortgages with conforming loan balances ($766,550 or less) decreased to 6.67% from 6.69%.

After sinking most of the last three weeks and dipping to a 7-week low, 30-year mortgage rates have ticked up slightly. Rates moved higher for many other loan types as well.

U.S. mortgage rates dropped to the lowest level in nearly two months this week, a trend that if sustained could boost home sales in the coming months. The average rate on the popular 30-year fixed-rate mortgage fell to 6.

After sinking most of three weeks and notching a 7-week low, 30-year mortgage rates have ticked up the last two days. Rate movement for other loan types was mixed.

Freddie Mac’s benchmark rate for a 30-year mortgage averaged 6.60% for the week ending December 12. It’s the third consecutive week the rate has decreased.