diff --git a/docs/addons.md b/docs/addons.md
index deb635d4019..991c6d94c42 100644
--- a/docs/addons.md
+++ b/docs/addons.md
@@ -43,3 +43,4 @@ look at [pymatgen dependents](https://github.com/materialsproject/pymatgen/netwo
 * [Matbench Discovery](https://github.com/janosh/matbench-discovery): Benchmark for machine learning crystal stability prediction.
 * [matgl](https://github.com/materialsvirtuallab/matgl): Graph deep learning library for materials. Implements M3GNet and MEGNet in DGL and Pytorch with more to come.
 * [chgnet](https://github.com/CederGroupHub/chgnet): Pretrained universal neural network potential for charge-informed atomistic modeling.
+* [DebyeCalculator](https://github.com/FrederikLizakJohansen/DebyeCalculator): A vectorised implementation of the Debye Scattering Equation on CPU and GPU.