Missouri Revised Statutes Title XXXV. Civil Procedure and Limitations § 511.430. Judgment of revival, when

If upon the service of the scire facias or publication as aforesaid, the defendant, or any of his creditors, do not appear and show cause against reviving the judgment or decree, the same shall be revived, and the lien continued for another period of three years; and so on, from time to time, as often as may be necessary.