--- a/debian-apt.rst	Sat Jan 09 20:50:54 2016 +0200
+++ b/debian-apt.rst	Sun Jan 10 09:57:09 2016 +0200
@@ -75,9 +75,20 @@
   $ cat /etc/apt/sources.list
   deb http://www.backports.org/debian/ etch-backports main contrib non-free
 
-Getting new keys for packages.
+Importing package signing key.
 ==============================
-::
+
+Usualy you can safely update keyring via ``debian-keyring`` package because it
+is signed by prevoius keyring::
+
+  $ sudo apt-get install debian-keyring
+
+Defferent 3rd party provide keys for download. If you trust key (or get it in a
+trusted way) it is easy to import it::
+
+  $ sudo apt-key add $FILE.pgp
+
+Another way to resolve warning::
 
   $ sudo apt-get update
   ...
@@ -88,6 +99,8 @@
   9AA38DCD55BE302B
   ...
 
+is to use key servers directly::
+
   $ gpg --keyserver pgp.mit.edu --recv-key 9AA38DCD55BE302B \
   --keyserver-options http-proxy=http://user:pass@192.168.1.1:3128
   gpg: requesting key 55BE302B from hkp server pgp.mit.edu