diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index b314ae52a..621f16aee 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,4 +1,4 @@
 [toolchain]
-channel = "1.65.0"
+channel = "1.66.0"
 components = ["rustfmt", "clippy"]
 targets = ["wasm32-unknown-unknown"]