diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index f9f0960..7e9ae7d 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,4 +1,4 @@
 [toolchain]
-channel = "1.98"
+channel = "1.99"
 components = [ "rustc", "rust-std", "rustfmt", "clippy", "rust-analyzer" ]
 targets = [ "thumbv7em-none-eabihf" ]