diff --git a/Cargo.toml b/Cargo.toml
index e9a2d1f..8737a3d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "calcifer"
 version = "1.3.1"
-edition = "2024"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html