diff --git a/.tool-versions b/.tool-versions
index 35b639fa..110e0c01 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1 @@
-rust 1.88.0
+rust 1.99.1
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 94c49a08..15d01607 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.93.0"
+channel = "1.99.1"
 components = ["rustfmt", "clippy", "rust-src"]