1 files changed, 1 insertions, 2 deletions
diff --git a/Cargo.toml b/Cargo.toml
index 2f48630..b019e54 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,14 +2,13 @@
 name = "ziptree"
 version = "0.1.1"
 authors = ["jerry73204 <jerry73204@gmail.com>"]
-edition = "2018"
+edition = "2021"
 description = "Tarjan's zip tree implemented in Rust"
 categories = ["data-structures", "algorithms"]
 documentation = "https://docs.rs/ziptree/0.1.0/ziptree/"
 repository = "https://github.com/jerry73204/ziptree-rs"
 homepage = "https://github.com/jerry73204/ziptree-rs"
 license = "MIT"
-license-file = "LICENSE"
 
 [dependencies]
 rand = "^0.6"