CALGARY, ALBERTA--(Marketwire - Nov. 1, 2010) - Bonavista Energy Trust (TSX:BNP.UN) is pleased to announce the increase to the Exchange Ratio of the Exchangeable Shares of Bonavista Petroleum Ltd. from 2.36741to 2.38222. This increase will be effective on November 15, 2010.

The following are the details of the calculation of the Exchange Ratio:

Record Date of Bonavista Energy Trust Distribution	Opening Exchange Ratio	Bonavista Energy Trust Distribution per Unit	Five day Weighted Average Trading Price of BNP.UN (Prior to the end of the Month	)	Increase in Exchange Ratio (1	)	Effective Date of the Increase in Exchange Ratio	Exchange Ratio as of Effective Date
October 31, 2010	2.36741	$0.16	$25.57		0.01481		November 15, 2010	2.38222
1. The increase in the Exchange Ratio is calculated by multiplying the Bonavista Energy Trust Distribution per Unit by the Exchange Ratio immediately prior to the Record Date and dividing by the five day weighted average trading price of BNP.UN.

A holder of Bonavista Petroleum Ltd. Exchangeable Shares can exchange all or a portion of their holdings into Bonavista Energy Trust Units, at any time, by giving notice to their investment advisor or Valiant Trust Company at its principal transfer office in Suite 310, 606 – 4^th Street S.W., Calgary, Alberta, T2P 1T1.

Please visit our website at www.bonavistaenergy.com for detailed corporate information.

FOR FURTHER INFORMATION PLEASE CONTACT:

Senior Vice President & CFO
Glenn A. Hamilton
(403) 213-4300

OR

700, 311 - 6th Avenue SW
Bonavista Energy Trust
Calgary, AB T2P 3H2
www.bonavistaenergy.com