diff --git a/benchmark/benchmark.R b/benchmark/benchmark.R
index e727bd7..75c97ef 100644
--- a/benchmark/benchmark.R
+++ b/benchmark/benchmark.R
@@ -3,6 +3,7 @@ library(MSstats)
 library(ggplot2)
 library(dplyr)
 library(stringr)
+library(parallel)
 
 
 calculateResult <- function(summarized, label){