diff --git a/README.md b/README.md
index 639270c3..499d62fa 100644
--- a/README.md
+++ b/README.md
@@ -70,12 +70,12 @@ module "start_ec2_instance" {
 | kms_key_arn | The ARN for the KMS encryption key. If this configuration is not provided when environment variables are in use, AWS Lambda uses a default service key | string | null | no |
 | aws_regions | A list of one or more aws regions where the lambda will be apply, default use the current region | list | null | no |
 | cloudwatch_schedule_expression | The scheduling expression | string | `"cron(0 22 ? * MON-FRI *)"` | yes |
-| schedule_action | Define schedule action to apply on resources | string | `"stop"` | yes |
-| resources_tag | Set the tag use for identify resources to stop or start | map | { tostop = "true" } | yes |
 | autoscaling_schedule | Enable scheduling on autoscaling resources | string | `"false"` | no |
 | ec2_schedule | Enable scheduling on ec2 instance resources | string | `"false"` | no |
 | rds_schedule | Enable scheduling on rds resources | string | `"false"` | no |
 | cloudwatch_alarm_schedule | Enable scheduleding on cloudwatch alarm resources | string | `"false"` | no |
+| schedule_action | Define schedule action to apply on resources | string | `"stop"` | yes |
+| scheduler_tag | Set the tag to use for identify aws resources to stop or start | map | {"key" = "tostop", "value" = "true"} | yes |
 
 ## Outputs
 
diff --git a/examples/autoscaling-scheduler/main.tf b/examples/autoscaling-scheduler/main.tf
index da9b6e94..ea8ccd3c 100644
--- a/examples/autoscaling-scheduler/main.tf
+++ b/examples/autoscaling-scheduler/main.tf
@@ -98,7 +98,7 @@ module "autoscaling-stop-friday" {
   autoscaling_schedule           = "true"
   cloudwatch_alarm_schedule      = "true"
 
-  resources_tag = {
+  scheduler_tag = {
     key   = "tostop"
     value = "true"
   }
@@ -114,7 +114,7 @@ module "autoscaling-start-monday" {
   autoscaling_schedule           = "true"
   cloudwatch_alarm_schedule      = "true"
 
-  resources_tag = {
+  scheduler_tag = {
     key   = "tostop"
     value = "true"
   }
diff --git a/examples/instance-scheduler/main.tf b/examples/instance-scheduler/main.tf
index 3d65b3d5..78767cb1 100644
--- a/examples/instance-scheduler/main.tf
+++ b/examples/instance-scheduler/main.tf
@@ -47,7 +47,7 @@ module "ec2-stop-friday" {
   autoscaling_schedule           = "false"
   cloudwatch_alarm_schedule      = "true"
 
-  resources_tag = {
+  scheduler_tag = {
     key   = "tostop"
     value = "true"
   }
@@ -63,7 +63,7 @@ module "ec2-start-monday" {
   autoscaling_schedule           = "false"
   cloudwatch_alarm_schedule      = "true"
 
-  resources_tag = {
+  scheduler_tag = {
     key   = "tostop"
     value = "true"
   }
diff --git a/examples/rds-scheduler/main.tf b/examples/rds-scheduler/main.tf
index bf237afd..76aadb9d 100644
--- a/examples/rds-scheduler/main.tf
+++ b/examples/rds-scheduler/main.tf
@@ -104,7 +104,7 @@ module "rds-stop-friday" {
   autoscaling_schedule           = "false"
   cloudwatch_alarm_schedule      = "true"
 
-  resources_tag = {
+  scheduler_tag = {
     key   = "tostop"
     value = "true"
   }
@@ -120,7 +120,7 @@ module "rds-start-monday" {
   autoscaling_schedule           = "false"
   cloudwatch_alarm_schedule      = "true"
 
-  resources_tag = {
+  scheduler_tag = {
     key   = "tostop"
     value = "true"
   }
diff --git a/examples/test_fixture/main.tf b/examples/test_fixture/main.tf
index ea7a4a4f..9a0483bf 100644
--- a/examples/test_fixture/main.tf
+++ b/examples/test_fixture/main.tf
@@ -15,7 +15,7 @@ module "aws-stop-friday" {
   ec2_schedule                   = "true"
   rds_schedule                   = "true"
 
-  resources_tag = {
+  scheduler_tag = {
     key   = "tostop"
     value = "true"
   }
@@ -30,7 +30,7 @@ module "aws-start-monday" {
   ec2_schedule                   = "true"
   rds_schedule                   = "true"
 
-  resources_tag = {
+  scheduler_tag = {
     key   = "tostop"
     value = "true"
   }
diff --git a/main.tf b/main.tf
index 4641e2ef..2a1ee7a1 100644
--- a/main.tf
+++ b/main.tf
@@ -210,6 +210,8 @@ locals {
       }
     ]
   }
+  # Backward compatibility with the former scheduler variable name.
+  scheduler_tag = var.resources_tag == null ? var.scheduler_tag : var.resources_tag
 }
 
 ################################################
@@ -222,7 +224,7 @@ locals {
 data "archive_file" "this" {
   type        = "zip"
   source_dir  = "${path.module}/package/"
-  output_path = "${path.module}/aws-stop-start-resources-3.1.2.zip" # The version should match with the latest git tag
+  output_path = "${path.module}/aws-stop-start-resources-3.1.3.zip" # The version should match with the latest git tag
 }
 
 # Create Lambda function for stop or start aws resources
@@ -239,8 +241,8 @@ resource "aws_lambda_function" "this" {
     variables = {
       AWS_REGIONS               = var.aws_regions == null ? data.aws_region.current.name : join(", ", var.aws_regions)
       SCHEDULE_ACTION           = var.schedule_action
-      TAG_KEY                   = var.resources_tag["key"]
-      TAG_VALUE                 = var.resources_tag["value"]
+      TAG_KEY                   = local.scheduler_tag["key"]
+      TAG_VALUE                 = local.scheduler_tag["value"]
       EC2_SCHEDULE              = tostring(var.ec2_schedule)
       RDS_SCHEDULE              = tostring(var.rds_schedule)
       AUTOSCALING_SCHEDULE      = tostring(var.autoscaling_schedule)
diff --git a/variables.tf b/variables.tf
index 02844d1a..f3e23102 100644
--- a/variables.tf
+++ b/variables.tf
@@ -39,12 +39,19 @@ variable "schedule_action" {
 }
 
 variable "resources_tag" {
-  description = "Set the tag use for identify resources to stop or start"
+  # This variable has been renamed to "scheduler_tag"
+  description = "DEPRECATED, use scheduler_tag variable instead"
+  type        = map(string)
+  default     = null
+}
+
+variable "scheduler_tag" {
+  description = "Set the tag to use for identify aws resources to stop or start"
   type        = map(string)
 
   default = {
-    key   = "tostop"
-    value = "true"
+    "key"   = "tostop"
+    "value" = "true"
   }
 }