--- a/python/mozboot/mozboot/freebsd.py
+++ b/python/mozboot/mozboot/freebsd.py
@@ -8,20 +8,22 @@ from mozboot.base import BaseBootstrappe
 class FreeBSDBootstrapper(BaseBootstrapper):
     def __init__(self, version, flavor, **kwargs):
         BaseBootstrapper.__init__(self, **kwargs)
         self.version = int(version.split('.')[0])
         self.flavor = flavor.lower()
 
         self.packages = [
             'autoconf213',
+            'cargo',
             'gmake',
             'gtar',
             'mercurial',
             'pkgconf',
+            'rust',
             'watchman',
             'zip',
         ]
 
         self.browser_packages = [
             'dbus-glib',
             'gconf2',
             'gtk2',

--- a/python/mozboot/mozboot/openbsd.py
+++ b/python/mozboot/mozboot/openbsd.py
@@ -7,18 +7,20 @@ from mozboot.base import BaseBootstrappe
 
 class OpenBSDBootstrapper(BaseBootstrapper):
     def __init__(self, version, **kwargs):
         BaseBootstrapper.__init__(self, **kwargs)
 
         self.packages = [
             'mercurial',
             'autoconf-2.13',
+            'cargo',
             'gmake',
             'gtar',
+            'rust',
             'wget',
             'unzip',
             'zip',
         ]
 
         self.browser_packages = [
             'llvm',
             'yasm',