diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 90bb313..c0486d2 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2026-09-18"
+channel = "nightly-2026-09-21"
 targets = [ "wasm32-unknown-unknown", "wasm32-wasip3" ]