diff --git a/vignettes/OLE_simulation_workflow.Rmd b/vignettes/OLE_simulation_workflow.Rmd
index 14d0f16..1d61d9f 100644
--- a/vignettes/OLE_simulation_workflow.Rmd
+++ b/vignettes/OLE_simulation_workflow.Rmd
@@ -36,7 +36,7 @@ for the open-label extension (OLE) phase.
 set.seed(2023)
 
 data_matrix_list <- list()
-ntrial <- 3
+ntrial <- 500
 
 # Specify the significance level alpha
 alpha <- 0.05
diff --git a/vignettes/primary_simulation_workflow.Rmd b/vignettes/primary_simulation_workflow.Rmd
index 963bbaa..6ea5d5b 100644
--- a/vignettes/primary_simulation_workflow.Rmd
+++ b/vignettes/primary_simulation_workflow.Rmd
@@ -38,7 +38,7 @@ set.seed(2023)
 
 data_matrix_list_null <- list()
 data_matrix_list_alt <- list()
-ntrial <- 3
+ntrial <- 500
 
 # Specify the significance level alpha
 alpha <- 0.05