diff --git a/cmd/uc/caddy/cert/ls.go b/cmd/uc/caddy/cert/ls.go
index 33d460d4..98fdb13d 100644
--- a/cmd/uc/caddy/cert/ls.go
+++ b/cmd/uc/caddy/cert/ls.go
@@ -17,6 +17,7 @@ import (
 	"github.com/psviderski/uncloud/internal/cli"
 	"github.com/psviderski/uncloud/internal/cli/completion"
 	"github.com/psviderski/uncloud/internal/cli/tui"
+	"github.com/psviderski/uncloud/internal/version"
 	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/psviderski/uncloud/pkg/client"
 	"github.com/spf13/cobra"
@@ -35,10 +36,13 @@ func NewListCommand() *cobra.Command {
 		Short:   "List certificates in cluster storage for Caddy.",
 		Long: `List certificates stored in the Uncloud cluster storage for Caddy.
 
-Caddy must use the Uncloud storage module (https://github.com/unlabs-dev/caddy-uncloud)
-configured with 'storage uncloud' in the global options for its certificates to appear here.
+Caddy uses cluster storage by default. Certificates don't appear here if Caddy uses local storage,
+for example, if it runs with a custom global config without 'storage uncloud' or was deployed with
+uc v0.21.0 or earlier and not upgraded.
 
-This inventory does not check whether Caddy currently serves or trusts a certificate.`,
+This inventory does not check whether Caddy currently serves or trusts a certificate.
+
+See ` + version.DocsURL + `/concepts/ingress/cluster-storage-for-caddy for details.`,
 		Args: cobra.NoArgs,
 		RunE: func(cmd *cobra.Command, _ []string) error {
 			uncli := cmd.Context().Value("cli").(*cli.CLI)
diff --git a/website/docs/9-cli-reference/uc_caddy_cert_ls.md b/website/docs/9-cli-reference/uc_caddy_cert_ls.md
index 9238f824..52b8988c 100644
--- a/website/docs/9-cli-reference/uc_caddy_cert_ls.md
+++ b/website/docs/9-cli-reference/uc_caddy_cert_ls.md
@@ -6,11 +6,14 @@ List certificates in cluster storage for Caddy.
 
 List certificates stored in the Uncloud cluster storage for Caddy.
 
-Caddy must use the Uncloud storage module (https://github.com/unlabs-dev/caddy-uncloud)
-configured with 'storage uncloud' in the global options for its certificates to appear here.
+Caddy uses cluster storage by default. Certificates don't appear here if Caddy uses local storage,
+for example, if it runs with a custom global config without 'storage uncloud' or was deployed with
+uc v0.21.0 or earlier and not upgraded.
 
 This inventory does not check whether Caddy currently serves or trusts a certificate.
 
+See https://uncloud.run/docs/concepts/ingress/cluster-storage-for-caddy for details.
+
 ```
 uc caddy cert ls [flags]
 ```