Using VS2005. I have several referenced DLLs in my project. When I build or rebuild solution, one of my DLLs does not get updated. The date and time stamp on this DLL does not change.

If I right click on the DLL in the solution explorer and click on update reference, the DLL does update with a current datetime stamp. However, if I build or rebuild solution again, this DLL will revert back to it's original datetime stamp.

How can I ensure that all my referenced DLLs are updated when I build or rebuild solution?

Thanks,

Jerry