update doc
diff --git a/DESCRIPTION b/DESCRIPTION
index a668bb2..3e41bd2 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -52,7 +52,8 @@
     testthat,
     magick,
     formattable,
-    dplyr
+    dplyr,
+    sparkline
 VignetteBuilder: knitr
 Encoding: UTF-8
 RoxygenNote: 6.1.1