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-# Isabelle/HoTT
+# Isabelle/HoTT [![DOI](https://zenodo.org/badge/134523964.svg)](https://zenodo.org/badge/latestdoi/134523964)
 
 An experimental implementation of [homotopy type theory](https://en.wikipedia.org/wiki/Homotopy_type_theory) in the interactive theorem prover [Isabelle](https://isabelle.in.tum.de/).