Switch to edition 2021

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/Cargo.toml b/Cargo.toml
index a268b24..771089b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name        = "daglib"
 version     = "0.1.0"
 authors     = ["Matthias Beyer <mail@beyermatthias.de>"]
-edition     = "2018"
+edition     = "2021"
 description = "Generic async DAG library"
 
 [dependencies]