update README

README.rst

@@ -42,21 +42,22 @@ Current limitations:
 Install Stable Version
 -----------------------
 
-To install aptly on Debian/Ubuntu, add new repository to ``/etc/apt/sources.list``::
+Aptly packages (aptly, aptly-api) are available in `Debian <https://packages.debian.org/search?keywords=aptly>`_ and `Ubuntu <https://packages.ubuntu.com/search?keywords=aptly>`_.
 
-    deb http://repo.aptly.info/ squeeze main
+To install upstream aptly versions, add the following to ``/etc/apt/sources.list.d/aptly.list``::
+
+    deb [signed-by=/etc/apt/keyrings/aptly.asc] http://repo.aptly.info/release DIST main
+Where DIST needs to be changed to the distribution: buster / bullseye / bookworm (Debian) or focal / jammy / noble (Ubuntu).
 
 And import key that is used to sign the release::
 
-    $ apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EE727D4449467F0E
+    $ sudo wget -O /etc/apt/keyrings/aptly.asc https://www.aptly.info/pubkey.txt
+For releases older than Debian 12 and Ubuntu 22.04, create the directory first: ``sudo mkdir /etc/apt/keyrings``.
 
 After that you can install aptly as any other software package::
 
     $ apt-get update
-    $ apt-get install aptly
-
-Don't worry about squeeze part in repo name: aptly package should work on Debian squeeze+,
-Ubuntu 10.0+. Package contains aptly binary, man page and bash completion.
+    $ apt-get install aptly  # aptly-api
 
 Other Binaries
 ~~~~~~~~~~~~~~~~~