Prices rose 0.3 percent during April, with the increase coming from food.
The widely watched Colombo Consumer Price Index rose 0.5 points to 178.4 points by end April 2014 from a month earlier.
The statistic office said half the index gain came from rising rice prices.
Sri Lanka's inflation was relatively low during the past year with credit growth being weak.
http://www.lankabusinessonline.com/news/sri-lankas-inflation-accelerates-to-4.9-pct-in-april/273051451