diff --git a/doc/contributing.texi b/doc/contributing.texi
index b1d236c011..17a54f94cc 100644
--- a/doc/contributing.texi
+++ b/doc/contributing.texi
@@ -1627,14 +1627,23 @@ git config commit.gpgsign true
 git config user.signingkey CABBA6EA1DC0FF33
 @end example
 
-You can prevent yourself from accidentally pushing unsigned commits to
-Savannah by using the pre-push Git hook located at
-@file{etc/git/pre-push}:
+To check that commits are signed with correct key, use:
+
+@example
+make authenticate
+@end example
+
+You can prevent yourself from accidentally pushing unsigned or signed
+with the wrong key commits to Savannah by using the pre-push Git hook
+located at @file{etc/git/pre-push}:
 
 @example
 cp etc/git/pre-push .git/hooks/pre-push
 @end example
 
+It additionally calls @code{make check-channel-news} to be sure
+@file{news.scm} file is correct.
+
 @subsection Commit Policy
 
 If you get commit access, please make sure to follow
diff --git a/doc/guix.texi b/doc/guix.texi
index 95b4fb1b2c..d573695e72 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -98,7 +98,7 @@ Copyright @copyright{} 2021 pukkamustard@*
 Copyright @copyright{} 2021 Alice Brenon@*
 Copyright @copyright{} 2021, 2022 Josselin Poiret@*
 Copyright @copyright{} 2021 muradm@*
-Copyright @copyright{} 2021 Andrew Tropin@*
+Copyright @copyright{} 2021, 2022 Andrew Tropin@*
 Copyright @copyright{} 2021 Sarah Morgensen@*
 Copyright @copyright{} 2022 Remco van 't Veer@*
 Copyright @copyright{} 2022 Aleksandr Vityazev@*