diff --git a/Dockerfile b/Dockerfile
index a0eac60..f25ed5b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
-# Use Ubuntu Version 14
-FROM ubuntu:14.04
+# Use Ubuntu Version 16
+FROM ubuntu:16.04
 
 MAINTAINER Xia Lab "jasmine.chong@mail.mcgill.ca"
 
@@ -10,13 +10,13 @@ LABEL Description = "MetaboAnalyst 4.0, includes the installation of all necessa
 # Thank you to Jack Howarth for his contributions in improving the Dockerfile.
 
 RUN apt-get update && \
-    apt-get install -y software-properties-common 
+    apt-get install -y software-properties-common sudo 
     
 RUN apt-get update && \
     add-apt-repository ppa:webupd8team/java && \
     apt-get update && \
     echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections && \ 
-    echo "deb http://cran.rstudio.com/bin/linux/ubuntu trusty/" >> /etc/apt/sources.list && \
+    echo "deb http://cran.rstudio.com/bin/linux/ubuntu xenial/" >> /etc/apt/sources.list && \
     gpg --keyserver keyserver.ubuntu.com --recv-key E084DAB9 && \
     gpg -a --export E084DAB9 | sudo apt-key add - && \
     apt-get update && \
diff --git a/metab4script.R b/metab4script.R
index f270994..abc3664 100644
--- a/metab4script.R
+++ b/metab4script.R
@@ -1,3 +1,2 @@
-library(pacman)
-p_load(Rserve, RColorBrewer, xtable, som, fitdistrplus, ROCR, RJSONIO, gplots, e1071, caTools, igraph, randomForest, Cairo, pls, pheatmap, lattice, rmarkdown, knitr, data.table, pROC, Rcpp, caret, ellipse, scatterplot3d, impute, pcaMethods, siggenes, globaltest, GlobalAncova, Rgraphviz, KEGGgraph, preprocessCore, genefilter, SSPA, sva, limma, car, xcms)
+library(Rserve)
 Rserve(args=" --no-save --RS-conf /etc/rserve.conf")