diff --git a/internal/services/postgres/postgresql_flexible_server_configuration_resource.go b/internal/services/postgres/postgresql_flexible_server_configuration_resource.go
index 799ec8f20802..c6f182fd2f56 100644
--- a/internal/services/postgres/postgresql_flexible_server_configuration_resource.go
+++ b/internal/services/postgres/postgresql_flexible_server_configuration_resource.go
@@ -19,6 +19,8 @@ import (
 	"github.com/hashicorp/terraform-provider-azurerm/utils"
 )
 
+var postgresqlFlexibleServerConfigurationResourceName = "azurerm_postgresql_flexible_server_configuration"
+
 func resourcePostgresqlFlexibleServerConfiguration() *pluginsdk.Resource {
 	return &pluginsdk.Resource{
 		Create: resourceFlexibleServerConfigurationUpdate,
@@ -79,6 +81,9 @@ func resourceFlexibleServerConfigurationUpdate(d *pluginsdk.ResourceData, meta i
 	locks.ByName(id.FlexibleServerName, postgresqlFlexibleServerResourceName)
 	defer locks.UnlockByName(id.FlexibleServerName, postgresqlFlexibleServerResourceName)
 
+	locks.ByName(id.ConfigurationName, postgresqlFlexibleServerConfigurationResourceName)
+	defer locks.UnlockByName(id.ConfigurationName, postgresqlFlexibleServerConfigurationResourceName)
+
 	props := configurations.Configuration{
 		Properties: &configurations.ConfigurationProperties{
 			Value:  utils.String(d.Get("value").(string)),
@@ -162,6 +167,9 @@ func resourceFlexibleServerConfigurationDelete(d *pluginsdk.ResourceData, meta i
 	locks.ByName(id.FlexibleServerName, postgresqlFlexibleServerResourceName)
 	defer locks.UnlockByName(id.FlexibleServerName, postgresqlFlexibleServerResourceName)
 
+	locks.ByName(id.ConfigurationName, postgresqlFlexibleServerConfigurationResourceName)
+	defer locks.UnlockByName(id.ConfigurationName, postgresqlFlexibleServerConfigurationResourceName)
+
 	resp, err := client.Get(ctx, *id)
 	if err != nil {
 		return fmt.Errorf("retrieving %s: %+v", id, err)