Bigger size of .EXE with new version

I have noticed that the .EXE of my workbook with the new 2.0 versión has a 8-10% bigger size compared to the previous one.

These are the differences:
-32 bits: from 7,6MB to 8,2MB
-64bits: from 8,5MB to 9,4MB

Is it logical?
The time to open the .EXE is a little longer.

We improved compression but this doesn’t appear actually…We upgraded our developer tools to more recent releases. These tools now generate larger EXE and DLL files because of new functionalities.
Opening is a bit slower because one internal component now uses a new anti-cracking technique.