diff --git a/yuubox-core/Cargo.toml b/yuubox-core/Cargo.toml
index 01b9fd6..93d61d5 100644
--- a/yuubox-core/Cargo.toml
+++ b/yuubox-core/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "yuubox-core"
 version = "1.0.0"
-edition = "2021"
+edition = "2026"
 license = "Apache-2.0"
 
 [lib]