diff --git a/README.md b/README.md
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@@ -1,5 +1,5 @@
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-<h1>Paper <sup><sup><sub>6.3</sub></sup></sup></h1>
+<h1>Paper <sup><sup><sub>6.4</sub></sup></sup></h1>
 
 Demo → [hugo-paper.vercel.app](https://hugo-paper.vercel.app/)