diff --git a/.gitignore b/.gitignore
index af95f8c..d9ebd7e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@ charmboard.conf
 # SQLite
 *.db
 *.db-*
+*.db.old
 
 # Perl::Critic
 perlcritic.log
diff --git a/charmboard.example.conf b/charmboard.example.conf
index b95df1c..ac19bf6 100644
--- a/charmboard.example.conf
+++ b/charmboard.example.conf
@@ -10,7 +10,8 @@
   },
 
   pass_crypt => {
-    pepper    => ''
+    scheme => '', # currently only 'argon2'
+    pepper => ''
   },
 
   environment => '', # only use 'dev' for now