diff --git a/Tools/vagrant/initvagrant.sh b/Tools/vagrant/initvagrant.sh
index 582bfac82f..2eb2e71a2d 100755
--- a/Tools/vagrant/initvagrant.sh
+++ b/Tools/vagrant/initvagrant.sh
@@ -38,6 +38,10 @@ apt-get install -y gdb
 
 sudo -u $VAGRANT_USER ln -fs /vagrant/Tools/vagrant/screenrc /home/$VAGRANT_USER/.screenrc
 
+# enable permissive ptrace:
+perl -pe 's/kernel.yama.ptrace_scope = ./kernel.yama.ptrace_scope = 0/' -i /etc/sysctl.d/10-ptrace.conf
+echo 0 > /proc/sys/kernel/yama/ptrace_scope
+
 # build JSB sim
 apt-get install -y libtool automake autoconf libexpat1-dev cmake
 #  libtool-bin