diff --git a/README.md b/README.md
index 58784e7..a88686c 100644
--- a/README.md
+++ b/README.md
@@ -313,7 +313,7 @@ If you overload `Base.show` directly inside a package, you might get annoying me
 
 ## Alternative syntax
 
-See also [MixedStructTypes.jl](https://github.com/JuliaDynamics/MixedStructTypes.jl) for an alternative syntax for defining sum types, and some other niceties.
+See also [DynamicSumTypes.jl](https://github.com/JuliaDynamics/DynamicSumTypes.jl) for an alternative syntax for defining sum types, and some other niceties.
 
 ## Performance