diff --git a/data-raw/example_data.R b/data-raw/example_data.R
index 76675d1..df11527 100644
--- a/data-raw/example_data.R
+++ b/data-raw/example_data.R
@@ -1,7 +1,7 @@
 ## code to prepare `example_data` dataset goes here
 library(CorBin)
 
-set.seed(1024)
+set.seed(1000)
 N = 500
 M = 1000
 C = 3
diff --git a/data/example_data.rda b/data/example_data.rda
index b36e3de..5ce2d3d 100644
Binary files a/data/example_data.rda and b/data/example_data.rda differ
diff --git a/vignettes/Introduction_to_CASE.Rmd b/vignettes/Introduction_to_CASE.Rmd
index 28c98a2..aa6e922 100644
--- a/vignettes/Introduction_to_CASE.Rmd
+++ b/vignettes/Introduction_to_CASE.Rmd
@@ -22,6 +22,7 @@ First, load necessary packages.
 library(CASE)
 library(ggplot2)
 library(susieR)
+set.seed(1000)
 ```
 
 ```{r}
@@ -38,7 +39,7 @@ cat("sample size =", N, "\n",
     "Cell type number =", C, "\n")
 ```
 
-Let's have a look at how the Linkage Disequilibrium (LD) of the example data looks like.
+Let's have a look at the Linkage Disequilibrium (LD) of the example genotype.
 
 ```{r}
 R = cor(X)