diff --git a/README.md b/README.md
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@@ -37,6 +37,7 @@ mathematical operations and collections that are found in Julia base.
 - [UnitfulEquivalences.jl](https://github.com/sostock/UnitfulEquivalences.jl): Enables conversion between equivalent quantities of different dimensions, e.g. between energy and wavelength of a photon.
 - [UnitfulLatexify.jl](https://github.com/gustaphe/UnitfulLatexify.jl): Pretty print units and quantities in LaTeX format.
 - [UnitfulBuckinghamPi.jl](https://github.com/rmsrosa/UnitfulBuckinghamPi.jl): Solves for the adimensional Pi groups in a list of Unitful parameters, according to the Buckingham-Pi Theorem.
+- [NaturallyUnitful.jl](https://github.com/MasonProtter/NaturallyUnitful.jl): Convert to and from natural units in physics.
 
 ## Related packages