README.adoc in git-lint-5.1.2 vs README.adoc in git-lint-5.2.0

@@ -28,10 +28,19 @@
 . link:https://git-scm.com[Git]
 . link:https://www.ruby-lang.org[Ruby]
 
 == Setup
 
-To install, run:
+To install _with_ security, run:
+
+[source,bash]
+----
+# 💡 Skip this line if you already have the public certificate installed.
+gem cert --add <(curl --compressed --location https://alchemists.io/gems.pem)
+gem install git-lint --trust-policy HighSecurity
+----
+
+To install _without_ security, run:
 
 [source,bash]
 ----
 gem install git-lint
 ----