diff --git a/DESCRIPTION b/DESCRIPTION
index 9f8d259..0752613 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -13,6 +13,7 @@ Description: UNIfied Cross-Omics deconvolution (Unico) deconvolves
     method that is theoretically justified for any heterogeneous genomic
     data.
 License: GPL-3
+URL: https://cozygene.github.io/Unico/
 BugReports: https://github.com/cozygene/Unico/issues
 Depends: 
     R (>= 4.0.0)
@@ -44,4 +45,3 @@ Config/testthat/edition: 3
 Encoding: UTF-8
 LazyData: true
 RoxygenNote: 7.2.3
-URL: https://cozygene.github.io/Unico/
diff --git a/vignettes/Unico-Tutorial.Rmd b/vignettes/Unico-Tutorial.Rmd
index e8be028..4c3f57a 100644
--- a/vignettes/Unico-Tutorial.Rmd
+++ b/vignettes/Unico-Tutorial.Rmd
@@ -13,10 +13,13 @@ knitr::opts_chunk$set(
   comment = "#>"
 )
 ```
-
+# Load the Unico package and 
 ```{r eval=F, setup}
 library(Unico)
 library(matrixStats)
+
+#For visualization in this vignette
+install.packages(c("ggplot2","ggpubr","hexbin"))
 source("https://github.com/cozygene/Unico/raw/main/vignettes/vignetts.utils.r")
 ```