diff --git a/TestTestNet/mining-node/install.sh b/TestTestNet/mining-node/install.sh
index 4ae76c5..7868a60 100644
--- a/TestTestNet/mining-node/install.sh
+++ b/TestTestNet/mining-node/install.sh
@@ -105,6 +105,11 @@ prepare_homedir() {
     echo "<===== prepare_homedir"
 }
 
+increase_ulimit_n() {
+     echo "${ADMIN_USERNAME} soft nofile 100000" | sudo tee /etc/security/limits.conf > /dev/null
+     echo "${ADMIN_USERNAME} hard nofile 100000" | sudo tee /etc/security/limits.conf > /dev/null 
+}
+
 install_ntpd() {
     echo "=====> install_ntpd"
     sudo timedatectl set-ntp no
@@ -345,7 +350,7 @@ main () {
     sudo apt-get update
 
     prepare_homedir
-
+    increase_ulimit_n
     install_ntpd
     install_haveged
     allocate_swap