TOKYO, March 22 (Reuters) - Japanese government bond prices edged higher on Thursday supported by the Bank of Japan's regular debt-buying operation, although a bounce in Tokyo shares checked the gains.
The 40-year yield fell 0.5 basis point to 0.890 percent, and the 20-year was down 0.5 basis point at 0.530 percent.
The 10-year yield was unchanged at 0.035 percent .
The BOJ on Thursday bought 710 billion yen ($6.72 billion) of five- to 40-year JGBs as part of its debt-purchasing scheme.
The JGB market showed little reaction to the Federal Reserve's decision to raise interest rates and its forecast for two more hikes for 2018, as the move was well anticipated.
Japan's Nikkei was up 0.7 percent.
$1 = 105.7200 yen) (Reporting by the Tokyo markets team Editing by Shri Navaratnam)