diff --git a/infrastructure/ecs_services/airflow_metrics.tf b/infrastructure/ecs_services/airflow_metrics.tf
index d86f586..ca04fff 100644
--- a/infrastructure/ecs_services/airflow_metrics.tf
+++ b/infrastructure/ecs_services/airflow_metrics.tf
@@ -62,7 +62,7 @@ resource "aws_ecs_task_definition" "airflow_metrics" {
         [
       {
             name  = "SERVICES_HASH"
-            value = local.services_hashes
+            value = join(",", local.services_hashes)
       }
 
       ])
diff --git a/infrastructure/ecs_services/airflow_scheduler.tf b/infrastructure/ecs_services/airflow_scheduler.tf
index c689391..1538736 100644
--- a/infrastructure/ecs_services/airflow_scheduler.tf
+++ b/infrastructure/ecs_services/airflow_scheduler.tf
@@ -77,7 +77,7 @@ resource "aws_ecs_task_definition" "airflow_scheduler" {
         [
       {
             name  = "SERVICES_HASH"
-            value = local.services_hashes
+            value = join(",", local.services_hashes)
       }
 
       ])
diff --git a/infrastructure/ecs_services/airflow_server.tf b/infrastructure/ecs_services/airflow_server.tf
index 884c9ed..71092c3 100644
--- a/infrastructure/ecs_services/airflow_server.tf
+++ b/infrastructure/ecs_services/airflow_server.tf
@@ -50,7 +50,7 @@ resource "aws_ecs_task_definition" "airflow_webserver" {
         [
       {
             name  = "SERVICES_HASH"
-            value = [local.config_folder_hash, local.services_build_path_hash]
+            value = "${local.config_folder_hash},${local.services_build_path_hash}"
       }
 
       ])
diff --git a/infrastructure/ecs_services/airflow_worker.tf b/infrastructure/ecs_services/airflow_worker.tf
index e73e935..10462b5 100644
--- a/infrastructure/ecs_services/airflow_worker.tf
+++ b/infrastructure/ecs_services/airflow_worker.tf
@@ -41,7 +41,7 @@ resource "aws_ecs_task_definition" "airflow_worker" {
           },
           {
             name  = "WORKER_HASHES"
-            value = local.workers_hashes
+            value = join(",", local.workers_hashes)
           }
         ]
       )