Firewall Alert: avr-gcc.exe is attempting to access Lotus Notes

Hi. I got this message at my firewall:

Program Blocked:
c:\program files (x86)\arduino\hardware\tools\avr\bin\avr-gcc.exe

avr-gcc.exe is attempting to access the network through the following application: C:\Lotus\Notes\nlnotes.exe
If this application is not related to any current user activity, select the 'Deny access' button and investigate the issue further.

I am curious to know, why is Arduino trying to access my Lotus Notes application?