diff --git a/DESCRIPTION b/DESCRIPTION
index 2f2bb0f..784573c 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -28,6 +28,7 @@ Imports:
     methods,
     tibble,
     aplot,
+    yulab.utils,
     forcats
 URL: https://github.com/gaospecial/ggVennDiagram, https://gaospecial.github.io/ggVennDiagram/
 License: GPL-3
@@ -35,7 +36,6 @@ Encoding: UTF-8
 RoxygenNote: 7.2.3
 Suggests: 
     testthat (>= 2.1.0),
-    yulab.utils,
     plotly,
     knitr,
     rmarkdown,