diff --git a/provisioners/install-mongo.sh b/provisioners/install-mongo.sh
old mode 100644
new mode 100755
index 731660a..330eca1
--- a/provisioners/install-mongo.sh
+++ b/provisioners/install-mongo.sh
@@ -1,13 +1,15 @@
 #!/bin/bash
 
 #get GPG key
-sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 2930ADAE8CAF5059EE73BB4B58712A2291FA4AD5
+curl -fsSL https://www.mongodb.org/static/pgp/server-4.4.asc | \
+   sudo gpg -o /usr/share/keyrings/mongodb-server-4.4.gpg \
+   --dearmor
 #create a sources list file
-echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.6.list
+echo "deb [ arch=amd64,arm64 signed-by=/usr/share/keyrings/mongodb-server-4.4.gpg ] https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/4.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.4.list
 #reload package database
 sudo apt-get update
 #install Mongo
 sudo apt-get install -y mongodb-org
 #start mongo
-systemctl enable mongod.service
-sudo service mongod start
\ No newline at end of file
+sudo systemctl enable mongod
+sudo systemctl start mongod
\ No newline at end of file
diff --git a/provisioners/install-node.sh b/provisioners/install-node.sh
old mode 100644
new mode 100755
index de8faa7..ceb375a
--- a/provisioners/install-node.sh
+++ b/provisioners/install-node.sh
@@ -1,11 +1,24 @@
 #!/bin/bash
 
-#nodesource PPA
-curl -sL https://deb.nodesource.com/setup_9.x | sudo -E bash -
-#update package database
+# Define the desired Node.js major version
+NODE_MAJOR=16
+# Update local package index
 sudo apt-get update
-#install NodeJS
+# Install necessary packages for downloading and verifying new repository information
+sudo apt-get install -y ca-certificates curl gnupg
+# Create a directory for the new repository's keyring, if it doesn't exist
+sudo mkdir -p /etc/apt/keyrings
+# Download the new repository's GPG key and save it in the keyring directory
+curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | sudo gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg
+# Add the new repository's source list with its GPG key for package verification
+echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_${NODE_MAJOR}.x nodistro main" | sudo tee /etc/apt/sources.list.d/nodesource.list
+# Update local package index to recognize the new repository
+sudo apt-get update
+# Install Node.js from the new repository
 sudo apt-get install -y nodejs
+
+
+
 #install PM2 to support NodeJS application run-as-service
 sudo npm install -g pm2
 #start TodoList app as a service