diff --git a/octopus-samples-instances/azure-base-infrastructure-terraform/azure-mariadb.tf b/octopus-samples-instances/azure-base-infrastructure-terraform/azure-mariadb.tf
index 311d2d8..692d830 100644
--- a/octopus-samples-instances/azure-base-infrastructure-terraform/azure-mariadb.tf
+++ b/octopus-samples-instances/azure-base-infrastructure-terraform/azure-mariadb.tf
@@ -7,7 +7,7 @@ resource "azurerm_mariadb_server" "permanent" {
   administrator_login_password = var.azure_mariadb_administrator_password
 
   sku_name                     = "B_Gen5_1"
-  version                      = "10.4"
+  version                      = "10.3"
   backup_retention_days        = 1
   geo_redundant_backup_enabled = false
   ssl_enforcement_enabled = true