diff --git a/Cargo.toml b/Cargo.toml
index 9d88aaa..20a71af 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "loopdev-3"
 description = "Setup and control loop devices"
 version = "0.5.1"
 authors = ["Stratis Developers <stratis-devel@lists.fedorahosted.org>", "Michael Daffin <michael@daffin.io>"]
-rust-version = "1.74.0"
+rust-version = "1.77.0"  # LOWEST SUPPORTED RUST TOOLCHAIN
 license = "MIT"
 documentation = "https://docs.rs/loopdev-3"
 repository = "https://github.com/stratis-storage/loopdev-3"