diff --git a/internal/service/docdbelastic/cluster.go b/internal/service/docdbelastic/cluster.go
index e4c13754ab0a..fc193d921a24 100644
--- a/internal/service/docdbelastic/cluster.go
+++ b/internal/service/docdbelastic/cluster.go
@@ -81,6 +81,13 @@ func (r *resourceCluster) Schema(ctx context.Context, _ resource.SchemaRequest,
 					enum.FrameworkValidate[awstypes.Auth](),
 				},
 			},
+			"backup_retention_period": schema.Int64Attribute{
+				Optional: true,
+				Computed: true,
+				Validators: []validator.Int64{
+					int64validator.Between(1, 35),
+				},
+			},
 			names.AttrEndpoint: schema.StringAttribute{
 				Computed: true,
 				PlanModifiers: []planmodifier.String{
@@ -162,14 +169,15 @@ func (r *resourceCluster) Create(ctx context.Context, request resource.CreateReq
 	}
 
 	input := &docdbelastic.CreateClusterInput{
-		ClientToken:       aws.String(id.UniqueId()),
-		AdminUserName:     flex.StringFromFramework(ctx, plan.AdminUserName),
-		AdminUserPassword: flex.StringFromFramework(ctx, plan.AdminUserPassword),
-		AuthType:          awstypes.Auth(plan.AuthType.ValueString()),
-		ClusterName:       flex.StringFromFramework(ctx, plan.Name),
-		ShardCapacity:     flex.Int32FromFramework(ctx, plan.ShardCapacity),
-		ShardCount:        flex.Int32FromFramework(ctx, plan.ShardCount),
-		Tags:              getTagsIn(ctx),
+		ClientToken:           aws.String(id.UniqueId()),
+		AdminUserName:         flex.StringFromFramework(ctx, plan.AdminUserName),
+		AdminUserPassword:     flex.StringFromFramework(ctx, plan.AdminUserPassword),
+		AuthType:              awstypes.Auth(plan.AuthType.ValueString()),
+		BackupRetentionPeriod: flex.Int32FromFramework(ctx, plan.BackupRetentionPeriod),
+		ClusterName:           flex.StringFromFramework(ctx, plan.Name),
+		ShardCapacity:         flex.Int32FromFramework(ctx, plan.ShardCapacity),
+		ShardCount:            flex.Int32FromFramework(ctx, plan.ShardCount),
+		Tags:                  getTagsIn(ctx),
 	}
 
 	if !plan.KmsKeyID.IsNull() || !plan.KmsKeyID.IsUnknown() {
@@ -276,6 +284,10 @@ func (r *resourceCluster) Update(ctx context.Context, request resource.UpdateReq
 			input.AuthType = awstypes.Auth(plan.AuthType.ValueString())
 		}
 
+		if !plan.BackupRetentionPeriod.Equal(state.BackupRetentionPeriod) {
+			input.BackupRetentionPeriod = flex.Int32FromFramework(ctx, plan.BackupRetentionPeriod)
+		}
+
 		if !plan.PreferredMaintenanceWindow.Equal(state.PreferredMaintenanceWindow) {
 			input.PreferredMaintenanceWindow = flex.StringFromFramework(ctx, plan.PreferredMaintenanceWindow)
 		}
@@ -381,6 +393,7 @@ type resourceClusterData struct {
 	AdminUserPassword          types.String   `tfsdk:"admin_user_password"`
 	ARN                        types.String   `tfsdk:"arn"`
 	AuthType                   types.String   `tfsdk:"auth_type"`
+	BackupRetentionPeriod      types.Int64    `tfsdk:"backup_retention_period"`
 	Endpoint                   types.String   `tfsdk:"endpoint"`
 	ID                         types.String   `tfsdk:"id"`
 	KmsKeyID                   types.String   `tfsdk:"kms_key_id"`
@@ -489,6 +502,7 @@ func findClusterByID(ctx context.Context, conn *docdbelastic.Client, id string)
 func (r *resourceClusterData) refreshFromOutput(ctx context.Context, output *awstypes.Cluster) {
 	r.AdminUserName = flex.StringToFrameworkLegacy(ctx, output.AdminUserName)
 	r.AuthType = flex.StringValueToFramework(ctx, string(output.AuthType))
+	r.BackupRetentionPeriod = flex.Int32ToFramework(ctx, output.BackupRetentionPeriod)
 	r.ARN = flex.StringToFramework(ctx, output.ClusterArn)
 	r.Endpoint = flex.StringToFramework(ctx, output.ClusterEndpoint)
 	r.KmsKeyID = flex.StringToFramework(ctx, output.KmsKeyId)
@@ -504,6 +518,7 @@ func clusterHasChanges(_ context.Context, plan, state resourceClusterData) bool
 	return !plan.Name.Equal(state.Name) ||
 		!plan.AdminUserPassword.Equal(state.AdminUserPassword) ||
 		!plan.AuthType.Equal(state.AuthType) ||
+		!plan.BackupRetentionPeriod.Equal(state.BackupRetentionPeriod) ||
 		!plan.PreferredMaintenanceWindow.Equal(state.PreferredMaintenanceWindow) ||
 		!plan.ShardCapacity.Equal(state.ShardCapacity) ||
 		!plan.ShardCount.Equal(state.ShardCount) ||
diff --git a/internal/service/docdbelastic/cluster_test.go b/internal/service/docdbelastic/cluster_test.go
index 0e9d6e5ba154..859aa753641f 100644
--- a/internal/service/docdbelastic/cluster_test.go
+++ b/internal/service/docdbelastic/cluster_test.go
@@ -180,6 +180,7 @@ func TestAccDocDBElasticCluster_update(t *testing.T) {
 					resource.TestCheckResourceAttr(resourceName, "shard_count", acctest.Ct1),
 					resource.TestCheckResourceAttr(resourceName, "admin_user_name", "testuser"),
 					resource.TestCheckResourceAttr(resourceName, "admin_user_password", "testpassword"),
+					resource.TestCheckResourceAttr(resourceName, "backup_retention_period", acctest.Ct1),
 					resource.TestCheckResourceAttr(resourceName, "subnet_ids.#", acctest.Ct2),
 					resource.TestCheckResourceAttr(resourceName, "vpc_security_group_ids.#", acctest.Ct1),
 					resource.TestCheckResourceAttr(resourceName, names.AttrPreferredMaintenanceWindow, "tue:04:00-tue:04:30"),
@@ -187,7 +188,7 @@ func TestAccDocDBElasticCluster_update(t *testing.T) {
 				),
 			},
 			{
-				Config: testAccClusterConfig_update(rName, 4),
+				Config: testAccClusterConfig_update(rName, 4, 2),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckClusterExists(ctx, resourceName, &cluster),
 					resource.TestCheckResourceAttr(resourceName, names.AttrName, rName),
@@ -196,6 +197,7 @@ func TestAccDocDBElasticCluster_update(t *testing.T) {
 					resource.TestCheckResourceAttr(resourceName, "shard_count", acctest.Ct1),
 					resource.TestCheckResourceAttr(resourceName, "admin_user_name", "testuser"),
 					resource.TestCheckResourceAttr(resourceName, "admin_user_password", "testpassword"),
+					resource.TestCheckResourceAttr(resourceName, "backup_retention_period", acctest.Ct2),
 					resource.TestCheckResourceAttr(resourceName, "subnet_ids.#", acctest.Ct2),
 					resource.TestCheckResourceAttr(resourceName, "vpc_security_group_ids.#", acctest.Ct1),
 					resource.TestCheckResourceAttr(resourceName, names.AttrPreferredMaintenanceWindow, "tue:04:00-tue:04:30"),
@@ -296,6 +298,8 @@ resource "aws_docdbelastic_cluster" "test" {
   admin_user_password = "testpassword"
   auth_type           = "PLAIN_TEXT"
 
+  backup_retention_period = 1
+
   preferred_maintenance_window = "tue:04:00-tue:04:30"
 
   vpc_security_group_ids = [
@@ -310,7 +314,7 @@ resource "aws_docdbelastic_cluster" "test" {
 `, rName))
 }
 
-func testAccClusterConfig_update(rName string, shardCapacity int) string {
+func testAccClusterConfig_update(rName string, shardCapacity int, backupRetentionPeriod int) string {
 	return acctest.ConfigCompose(
 		testAccClusterBaseConfig(rName),
 		fmt.Sprintf(`
@@ -323,6 +327,8 @@ resource "aws_docdbelastic_cluster" "test" {
   admin_user_password = "testpassword"
   auth_type           = "PLAIN_TEXT"
 
+  backup_retention_period = %[3]d
+
   preferred_maintenance_window = "tue:04:00-tue:04:30"
 
   vpc_security_group_ids = [
@@ -334,7 +340,7 @@ resource "aws_docdbelastic_cluster" "test" {
     aws_subnet.test[1].id
   ]
 }
-`, rName, shardCapacity))
+`, rName, shardCapacity, backupRetentionPeriod))
 }
 
 func testAccClusterConfig_tags1(rName, key1, value1 string) string {