diff --git a/.changelog/39971.txt b/.changelog/39971.txt
new file mode 100644
index 00000000000..d91628df045
--- /dev/null
+++ b/.changelog/39971.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+resource/aws_codedeploy_deployment_group: Remove maximum items limit on the `alarm_configuration.alarms` argument
+```
diff --git a/internal/service/deploy/deployment_group.go b/internal/service/deploy/deployment_group.go
index b0f9763991d..f7b84d423a2 100644
--- a/internal/service/deploy/deployment_group.go
+++ b/internal/service/deploy/deployment_group.go
@@ -74,7 +74,6 @@ func resourceDeploymentGroup() *schema.Resource {
 					Schema: map[string]*schema.Schema{
 						"alarms": {
 							Type:     schema.TypeSet,
-							MaxItems: 10,
 							Optional: true,
 							Elem:     &schema.Schema{Type: schema.TypeString},
 						},
diff --git a/website/docs/r/codedeploy_deployment_group.html.markdown b/website/docs/r/codedeploy_deployment_group.html.markdown
index 2fe8fcd08e4..4bc280ccf94 100644
--- a/website/docs/r/codedeploy_deployment_group.html.markdown
+++ b/website/docs/r/codedeploy_deployment_group.html.markdown
@@ -211,7 +211,7 @@ This resource supports the following arguments:
 
 You can configure a deployment to stop when a **CloudWatch** alarm detects that a metric has fallen below or exceeded a defined threshold. `alarm_configuration` supports the following:
 
-* `alarms` - (Optional) A list of alarms configured for the deployment group. _A maximum of 10 alarms can be added to a deployment group_.
+* `alarms` - (Optional) A list of alarms configured for the deployment group.
 * `enabled` - (Optional) Indicates whether the alarm configuration is enabled. This option is useful when you want to temporarily deactivate alarm monitoring for a deployment group without having to add the same alarms again later.
 * `ignore_poll_alarm_failure` - (Optional) Indicates whether a deployment should continue if information about the current state of alarms cannot be retrieved from CloudWatch. The default value is `false`.
     * `true`: The deployment will proceed even if alarm status information can't be retrieved.