About 136 people were hospitalised and 14 were discharged from hospital earlier, they said.
Initial reports put the death toll at 55 and the number of missing at 9. Two victims had been mistakenly counted as missing, state-run Xinhua news agency quoted police as saying.
Crude oil began leaking from the underground pipeline operated by Sinopec in Qingdao's Huangdao District.
The spill then flowed into the city's sewage network, which empties into the Jiaozhou Bay.