# How can I add dot after the subsection number?

I use \usepackage{secdot} so I achieved dot after section numbering. But I can't for subsection

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Sorry to bother you. Now that you've received answers to your questions, don't forget that for each question, after a sensible wait, you can accept the answer that you consider best solved your problem by clicking the checkmark to its left. In case of doubt, please see How do you accept an answer?. –  Gonzalo Medina Jul 15 at 15:35

\documentclass{article}