diff --git a/server/terraform/main.tf b/server/terraform/main.tf
index 665552a7..a4b7d665 100644
--- a/server/terraform/main.tf
+++ b/server/terraform/main.tf
@@ -13,6 +13,7 @@ resource "juju_application" "testflinger" {
   config = {
     external_hostname = var.external_ingress_hostname
     max_pool_size = var.max_pool_size
+    jwt_signing_key = var.jwt_signing_key
   }
 }
 
diff --git a/server/terraform/variables.tf b/server/terraform/variables.tf
index 6738491f..c60ad467 100644
--- a/server/terraform/variables.tf
+++ b/server/terraform/variables.tf
@@ -42,6 +42,12 @@ variable "max_pool_size" {
   default     = 100
 }
 
+variable "jwt_signing_key" {
+  description = "The signing key for JWT tokens"
+  sensitive   = true
+  type        = string
+}
+
 locals {
   app_model = "testflinger-${var.environment}"
 }