diff --git a/Cargo.toml b/Cargo.toml
index cd69cae..587d5e7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "pixiv_downloader"
 version = "0.0.1"
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
diff --git a/proc_macros/Cargo.toml b/proc_macros/Cargo.toml
index 737271a..98c7f2c 100644
--- a/proc_macros/Cargo.toml
+++ b/proc_macros/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "proc_macros"
 version = "0.0.1"
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html