diff --git a/Cargo.toml b/Cargo.toml
index 1d45b2b..5d0cd0c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,5 +2,6 @@
 name = "clusters"
 version = "0.1.0"
 authors = ["Alan K <afksavish@gmail.com>"]
+edition = "2021"
 
 [dependencies]
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index 7af1d48..99fe7f4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -64,5 +64,5 @@ pub trait Algorithm<T> {
     /// To accomodate the various required parameters of different algorithms,
     /// it is expected that this trait is implemented by types that have
     /// access to their requirements. For instance, as fields in a struct.
-    fn cluster(&self, clusterables: &[T]) -> Box<Clustered<T>>;
+    fn cluster(&self, clusterables: &[T]) -> Box<dyn Clustered<T>>;
 }