diff --git a/acme/client.go b/acme/client.go
index b34c7bb8..700aeab5 100644
--- a/acme/client.go
+++ b/acme/client.go
@@ -1,3 +1,4 @@
+// Package acme implements the ACME protocol for Let's Encrypt and other conforming providers.
 package acme
 
 import (
diff --git a/cli.go b/cli.go
index 51e256c3..3851c455 100644
--- a/cli.go
+++ b/cli.go
@@ -1,3 +1,5 @@
+// Let's Encrypt client to go!
+// CLI application for generating Let's Encrypt certificates using the ACME package.
 package main
 
 import (