diff --git a/pym/portage/__init__.py b/pym/portage/__init__.py
index 4731db5..374d077 100644
--- a/pym/portage/__init__.py
+++ b/pym/portage/__init__.py
@@ -517,7 +517,8 @@
 		# environment to apply to the config that's associated
 		# with ROOT != "/", so pass a nearly empty dict for the env parameter.
 		clean_env = {}
-		for k in ('PATH', 'PORTAGE_GRPNAME', 'PORTAGE_USERNAME', 'TERM',
+		for k in ('PATH', 'PORTAGE_GRPNAME', 'PORTAGE_USERNAME',
+			'SSH_AGENT_PID', 'SSH_AUTH_SOCK', 'TERM',
 			'ftp_proxy', 'http_proxy', 'no_proxy'):
 			v = settings.get(k)
 			if v is not None: