diff --git a/openvpn-install.sh b/openvpn-install.sh
index d6f4f12..2398498 100644
--- a/openvpn-install.sh
+++ b/openvpn-install.sh
@@ -191,18 +191,18 @@ else
 	read -n1 -r -p "Press any key to continue..."
 		if [[ "$OS" = 'debian' ]]; then
 		apt-get update
-		apt-get install openvpn iptables openssl -y
+		apt-get install openvpn iptables openssl ca-certificates -y
 	else
 		# Else, the distro is CentOS
 		yum install epel-release -y
-		yum install openvpn iptables openssl wget -y
+		yum install openvpn iptables openssl wget ca-certificates -y
 	fi
 	# An old version of easy-rsa was available by default in some openvpn packages
 	if [[ -d /etc/openvpn/easy-rsa/ ]]; then
 		rm -rf /etc/openvpn/easy-rsa/
 	fi
 	# Get easy-rsa
-	wget --no-check-certificate -O ~/EasyRSA-3.0.1.tgz https://github.com/OpenVPN/easy-rsa/releases/download/3.0.1/EasyRSA-3.0.1.tgz
+	wget -O ~/EasyRSA-3.0.1.tgz https://github.com/OpenVPN/easy-rsa/releases/download/3.0.1/EasyRSA-3.0.1.tgz
 	tar xzf ~/EasyRSA-3.0.1.tgz -C ~/
 	mv ~/EasyRSA-3.0.1/ /etc/openvpn/
 	mv /etc/openvpn/EasyRSA-3.0.1/ /etc/openvpn/easy-rsa/