[BioC] edgeR: exactTest different p value in new version 2.4

[Sermsawat Tunlaya-anukit]

I used edgeR to test differential expression of RNA seq data, but i noticed some different between old version 2.2.5and new version2.4. I compare p value and adjust p value between old version and new one using exactTest() and found that the values are slightly different(logFC and LogConc are the same). Do you change method to calculate p value in the new version? 

Best regards,
Sermsawat Tunlaya-anukit