If you're not receiving resumes from women, you may want to examine your job advertising, benefits, and reputation in the industry.
The way you advertise jobs will have a large influence on the type of people who apply. Word of mouth through your all-male developer network isn't likely to reach female developers. The tone of your ads may discourage women from applying (a PDF study: dbem.ws/Sex%20biased%20ads.pdf).
The benefits you offer may also discourage women. Vacation time, flexible hours, and maternity leave tend to be as important to mothers or would-be mothers as health and dental coverage (as a father those things are also important to me, but I know dads who don't care). If you've got benefits that only a young single guy could love, you'll get young single guys applying.
And then there's your reputation. Software development is a surprisingly small, connected industry. If you've only interviewed one female developer in 11 years (the maximum if you've only ever met one), that statistic is out there. Perhaps women don't apply because they've heard you don't hire women or don't even interview them.
If you're not getting female developers applying for jobs, you're missing out on half the talent out there. You may want to check your network on LinkedIn and find out where they are working and why. And more importantly, why they're not interested in working for you.