diff --git a/jenkins-packer-demo/amivar.tf b/jenkins-packer-demo/amivar.tf
new file mode 100644
index 0000000..3503935
--- /dev/null
+++ b/jenkins-packer-demo/amivar.tf
@@ -0,0 +1 @@
+variable "APP_INSTANCE_AMI" { default = "" }
diff --git a/jenkins-packer-demo/key.tf b/jenkins-packer-demo/key.tf
index 0d3c220..278a5a9 100644
--- a/jenkins-packer-demo/key.tf
+++ b/jenkins-packer-demo/key.tf
@@ -1,4 +1,7 @@
 resource "aws_key_pair" "mykeypair" {
   key_name = "mykeypair"
   public_key = "${file("${var.PATH_TO_PUBLIC_KEY}")}"
+  lifecycle {
+    ignore_changes = ["public_key"]
+  }
 }
diff --git a/jenkins-packer-demo/scripts/jenkins-init.sh b/jenkins-packer-demo/scripts/jenkins-init.sh
index 98e64a7..976a1dc 100644
--- a/jenkins-packer-demo/scripts/jenkins-init.sh
+++ b/jenkins-packer-demo/scripts/jenkins-init.sh
@@ -30,12 +30,12 @@ pip install awscli
 
 # install terraform
 cd /usr/local/bin
-wget -q https://releases.hashicorp.com/terraform/0.7.4/terraform_0.7.4_linux_amd64.zip
-unzip terraform_0.7.4_linux_amd64.zip
+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
 # install packer
 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
 apt-get clean
-rm terraform_0.7.4_linux_amd64.zip
+rm terraform_0.7.7_linux_amd64.zip
 rm packer_0.10.2_linux_amd64.zip