diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 7263aecff..f3401dca5 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -3,7 +3,7 @@
 # change; Dependabot opens a PR when a new release is available, and any new
 # lints get fixed there, once, instead of in every open PR.
 [toolchain]
-channel = "1.99.0"
+channel = "1.99.1"
 components = ["rustfmt", "clippy"]
 # The MSVC builds cross-compile with `cargo build --target` (windows/rust.bat),
 # so the target std must exist for the pinned toolchain.