diff --git a/pkg/format/formatter.go b/pkg/format/formatter.go
index c42b8ea..2b744d1 100644
--- a/pkg/format/formatter.go
+++ b/pkg/format/formatter.go
@@ -92,7 +92,11 @@
 		format = Format(strings.TrimPrefix(string(f), "table"))
 	}
 
-	tmpl, err := template.New("output").Parse(string(format))
+	funcmap := template.FuncMap{
+		"timestamp": formatTimestamp,
+		"since":     formatSince}
+
+	tmpl, err := template.New("output").Funcs(funcmap).Parse(string(format))
 	if err != nil {
 		return err
 	}