diff --git a/vagrantSandbox/initCentOSRHELScript.sh b/vagrantSandbox/initCentOSRHELScript.sh
index 4aca9927e..de0966b80 100755
--- a/vagrantSandbox/initCentOSRHELScript.sh
+++ b/vagrantSandbox/initCentOSRHELScript.sh
@@ -11,7 +11,7 @@ rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noar
 
 # some of these packages are already installed. But lets be sure
 
-neededPackages=(gcc-c++ gcc-gfortran mercurial git flex bison make ccache rpm-build wget zlib-devel binutils-devel)
+neededPackages=(gcc-c++ gcc-gfortran mercurial git flex bison make ccache rpm-build wget zlib-devel binutils-devel libXt-devel)
 bonusPackages=(emacs csh tcsh zsh)
 
 for p in ${neededPackages[@]}; do