diff --git a/README.md b/README.md
index 981c4d3..ba06b91 100644
--- a/README.md
+++ b/README.md
@@ -246,6 +246,7 @@ Available targets:
 | <a name="input_notifications_enabled"></a> [notifications\_enabled](#input\_notifications\_enabled) | Whether or not to setup Slack notifications. Set to `true` to create an SNS topic and Lambda function to send alerts to Slack. | `bool` | `false` | no |
 | <a name="input_regex_replace_chars"></a> [regex\_replace\_chars](#input\_regex\_replace\_chars) | Terraform regular expression (regex) string.<br>Characters matching the regex will be removed from the ID elements.<br>If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits. | `string` | `null` | no |
 | <a name="input_slack_channel"></a> [slack\_channel](#input\_slack\_channel) | The name of the channel in Slack for notifications. Only used when `notifications_enabled` is `true` | `string` | `""` | no |
+| <a name="input_slack_emoji"></a> [slack\_emoji](#input\_slack\_emoji) | A custom emoji that will appear on Slack messages | `string` | `":amazon-aws:"` | no |
 | <a name="input_slack_username"></a> [slack\_username](#input\_slack\_username) | The username that will appear on Slack messages. Only used when `notifications_enabled` is `true` | `string` | `""` | no |
 | <a name="input_slack_webhook_url"></a> [slack\_webhook\_url](#input\_slack\_webhook\_url) | The URL of Slack webhook. Only used when `notifications_enabled` is `true` | `string` | `""` | no |
 | <a name="input_stage"></a> [stage](#input\_stage) | ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' | `string` | `null` | no |
@@ -364,7 +365,7 @@ In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.
 
 ## Copyrights
 
-Copyright © 2021-2022 [Cloud Posse, LLC](https://cloudposse.com)
+Copyright © 2021-2023 [Cloud Posse, LLC](https://cloudposse.com)
 
 
 
diff --git a/docs/terraform.md b/docs/terraform.md
index ee56512..988f131 100644
--- a/docs/terraform.md
+++ b/docs/terraform.md
@@ -55,6 +55,7 @@
 | <a name="input_notifications_enabled"></a> [notifications\_enabled](#input\_notifications\_enabled) | Whether or not to setup Slack notifications. Set to `true` to create an SNS topic and Lambda function to send alerts to Slack. | `bool` | `false` | no |
 | <a name="input_regex_replace_chars"></a> [regex\_replace\_chars](#input\_regex\_replace\_chars) | Terraform regular expression (regex) string.<br>Characters matching the regex will be removed from the ID elements.<br>If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits. | `string` | `null` | no |
 | <a name="input_slack_channel"></a> [slack\_channel](#input\_slack\_channel) | The name of the channel in Slack for notifications. Only used when `notifications_enabled` is `true` | `string` | `""` | no |
+| <a name="input_slack_emoji"></a> [slack\_emoji](#input\_slack\_emoji) | A custom emoji that will appear on Slack messages | `string` | `":amazon-aws:"` | no |
 | <a name="input_slack_username"></a> [slack\_username](#input\_slack\_username) | The username that will appear on Slack messages. Only used when `notifications_enabled` is `true` | `string` | `""` | no |
 | <a name="input_slack_webhook_url"></a> [slack\_webhook\_url](#input\_slack\_webhook\_url) | The URL of Slack webhook. Only used when `notifications_enabled` is `true` | `string` | `""` | no |
 | <a name="input_stage"></a> [stage](#input\_stage) | ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' | `string` | `null` | no |
diff --git a/main.tf b/main.tf
index f065ecd..ac9a36e 100644
--- a/main.tf
+++ b/main.tf
@@ -102,6 +102,7 @@ module "slack_notify_lambda" {
   slack_webhook_url = var.slack_webhook_url
   slack_channel     = var.slack_channel
   slack_username    = var.slack_username
+  slack_emoji       = var.slack_emoji
 
   # underlying module doesn't like when `kms_key_arn` is `null`
   kms_key_arn = local.create_kms_key ? module.kms_key.key_arn : (var.kms_master_key_id == null ? "" : var.kms_master_key_id)
@@ -148,7 +149,9 @@ resource "aws_budgets_budget" "default" {
   }
 
   dynamic "notification" {
-    for_each = lookup(each.value, "notification", null) != null ? try(tolist(each.value.notification), [each.value.notification]) : []
+    for_each = lookup(each.value, "notification", null) != null ? try(tolist(each.value.notification), [
+      each.value.notification
+    ]) : []
 
     content {
       comparison_operator = notification.value.comparison_operator
@@ -156,7 +159,9 @@ resource "aws_budgets_budget" "default" {
       threshold_type      = notification.value.threshold_type
       notification_type   = notification.value.notification_type
       # use SNS topic when `sns_notification_enabled` is true, otherwise either of these values must be present in budgets.notification object
-      subscriber_sns_topic_arns  = local.notifications_enabled ? [module.sns_topic.sns_topic_arn] : lookup(notification.value, "subscriber_sns_topic_arns", null)
+      subscriber_sns_topic_arns = local.notifications_enabled ? [
+        module.sns_topic.sns_topic_arn
+      ] : lookup(notification.value, "subscriber_sns_topic_arns", null)
       subscriber_email_addresses = local.notifications_enabled ? null : lookup(notification.value, "subscriber_email_addresses", null)
     }
   }
diff --git a/variables.tf b/variables.tf
index 04dc097..289fd28 100644
--- a/variables.tf
+++ b/variables.tf
@@ -55,3 +55,9 @@ variable "slack_username" {
   description = "The username that will appear on Slack messages. Only used when `notifications_enabled` is `true`"
   default     = ""
 }
+
+variable "slack_emoji" {
+  type        = string
+  description = "A custom emoji that will appear on Slack messages"
+  default     = ":amazon-aws:"
+}