diff --git a/Cargo.toml b/Cargo.toml
index 153c4bd..88362d7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,7 @@ repository = "https://github.com/steven-omaha/pacdef"
 readme = "README.md"
 keywords = ["package-manager", "linux", "declarative", "cli"]
 categories = ["command-line-utilities"]
+rust-version = "1.65"
 
 [workspace]
 members = ["crates/pacdef_macros", "crates/pacdef_core"]