diff --git a/docker-demo-3/scripts/jenkins-init.sh b/docker-demo-3/scripts/jenkins-init.sh
index 5de5f02..88e2b3e 100644
--- a/docker-demo-3/scripts/jenkins-init.sh
+++ b/docker-demo-3/scripts/jenkins-init.sh
@@ -45,9 +45,11 @@ rm -f get-pip.py
 pip install awscli
 
 # install terraform
-cd /usr/local/bin
-wget -q https://releases.hashicorp.com/terraform/0.7.7/terraform_0.7.7_linux_amd64.zip
-unzip terraform_0.7.7_linux_amd64.zip
+TERRAFORM_VERSION="0.11.7"
+wget -q https://releases.hashicorp.com/terraform/${TERRAFORM_VERSION}/terraform_${TERRAFORM_VERSION}_linux_amd64.zip \
+&& unzip -o terraform_${TERRAFORM_VERSION}_linux_amd64.zip -d /usr/local/bin \
+&& rm terraform_${TERRAFORM_VERSION}_linux_amd64.zip
+
 # clean up
 apt-get clean
 rm terraform_0.7.7_linux_amd64.zip
diff --git a/jenkins-packer-demo/output.tf b/jenkins-packer-demo/output.tf
index 4c9668a..1a3f26e 100644
--- a/jenkins-packer-demo/output.tf
+++ b/jenkins-packer-demo/output.tf
@@ -1,6 +1,6 @@
 output "jenkins-ip" {
-  value = "${aws_instance.jenkins-instance.*.public_ip}"
+  value = ["${aws_instance.jenkins-instance.*.public_ip}"]
 }
 output "app-ip" {
-  value = "${aws_instance.app-instance.*.public_ip}"
+  value = ["${aws_instance.app-instance.*.public_ip}"]
 }
diff --git a/jenkins-packer-demo/scripts/jenkins-init.sh b/jenkins-packer-demo/scripts/jenkins-init.sh
index da54c2f..91767f6 100644
--- a/jenkins-packer-demo/scripts/jenkins-init.sh
+++ b/jenkins-packer-demo/scripts/jenkins-init.sh
@@ -39,10 +39,13 @@ rm -f get-pip.py
 pip install awscli
 
 # install terraform
-cd /usr/local/bin
-wget -q https://releases.hashicorp.com/terraform/0.7.7/terraform_0.7.7_linux_amd64.zip
-unzip terraform_0.7.7_linux_amd64.zip
+TERRAFORM_VERSION="0.11.7"
+wget -q https://releases.hashicorp.com/terraform/${TERRAFORM_VERSION}/terraform_${TERRAFORM_VERSION}_linux_amd64.zip \
+&& unzip -o terraform_${TERRAFORM_VERSION}_linux_amd64.zip -d /usr/local/bin \
+&& rm terraform_${TERRAFORM_VERSION}_linux_amd64.zip
+
 # install packer
+cd /usr/local/bin
 wget -q https://releases.hashicorp.com/packer/0.10.2/packer_0.10.2_linux_amd64.zip
 unzip packer_0.10.2_linux_amd64.zip
 # clean up