diff --git a/DESCRIPTION b/DESCRIPTION
index ba77c63..c8bf80c 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -46,6 +46,7 @@ Suggests:
     lars,
     leaps,
     maniTools,
+    maps,
     maptree,
     mclust,
     mvtnorm,
@@ -59,6 +60,7 @@ Suggests:
     rpart,
     SemiPar,
     sessioninfo,
+    sf,
     sig,
     sloop,
     splines,