diff --git a/variables.tf b/variables.tf
index cbd692a..9ecb0d7 100644
--- a/variables.tf
+++ b/variables.tf
@@ -40,14 +40,14 @@ variable "tags" {
 variable "istio_chart_version" {
   description = "The version of istio to install into the cluster."
   type        = string
-  default     = "1.22.3"
+  default     = "1.18.2"
 }
 
 # The `APP VERSION` of the output found while determining the chart version
 variable "istio_version" {
   description = "The version of istio to install into the cluster."
   type        = string
-  default     = "1.22.3"
+  default     = "1.18.2"
 }
 
 variable "enable_telemetry" {