diff --git a/scheme/packages.scm b/scheme/packages.scm
index 7971e63..c85c133 100644
--- a/scheme/packages.scm
+++ b/scheme/packages.scm
@@ -558,6 +558,7 @@
 (define-structure dns dns-interface
   (open scheme-with-scsh
 	big-util
+	srfi-1
 	tables
 	ascii
 	formats