diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml
index 08316597fa1e60deb0fba18cbbd6dc1e0e4cc2ea..8a324457fe59933136d01af24c5a90d20937fb56 100644
--- a/docs/sample_config.yaml
+++ b/docs/sample_config.yaml
@@ -802,6 +802,16 @@ uploads_path: "DATADIR/uploads"
 #  period: 6w
 #  renew_at: 1w
 #  renew_email_subject: "Renew your %(app)s account"
+#  # Directory in which Synapse will try to find the HTML files to serve to the
+#  # user when trying to renew an account. Optional, defaults to
+#  # synapse/res/templates.
+#  template_dir: "res/templates" 
+#  # HTML to be displayed to the user after they successfully renewed their
+#  # account. Optional.
+#  account_renewed_html_path: "account_renewed.html"
+#  # HTML to be displayed when the user tries to renew an account with an invalid
+#  # renewal token. Optional.
+#  invalid_token_html_path: "invalid_token.html"
 
 # Time that a user's session remains valid for, after they log in.
 #