diff --git a/Cargo.toml b/Cargo.toml
index 92d779a..1144ed3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,7 @@
 name = "pomodoro"
 edition = "2021"
 version = "0.1.0"
+rust-version = "1.61"
 
 [dependencies]
 anyhow = "1.0"