Lintian cleanups

Change-Id: I18f049d13f96068758a8ba1a46bbe4c35d867c2f
diff --git a/debian/control b/debian/control
index 6938f41..1b9f9dc 100644
--- a/debian/control
+++ b/debian/control
@@ -2,11 +2,14 @@
 Section: misc
 Priority: optional
 Maintainer: Coral <coral-support@google.com>
-Build-Depends: debhelper, gnupg
+Build-Depends: debhelper (>=10), gnupg
+Standards-Version: 3.9.8
 
 Package: mendel-keyring
 Section: misc
 Priority: optional
 Architecture: all
-Depends:
+Depends: ${misc:Depends}
 Description: Public keys to verify packages for the Mendel OS
+ Keys used by Aptitude to verify packages from the Mendel
+ Apt package repositories.
diff --git a/debian/copyright b/debian/copyright
index 44bcacc..5c93bb0 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -1,6 +1,6 @@
 Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Upstream-Name: mendel-keyring
-Source: https://aiyprojects.googlesource.com/mendel-keyring
+Source: https://coral.googlesource.com/mendel-keyring
 
 Files: *
 Copyright: Copyright 2018 Google, LLC <coral-support@google.com>