diff --git a/Cargo.toml b/Cargo.toml
index 020954783..2012d0117 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -143,7 +143,7 @@ members = ["fuzz"]
 exclude = ["embedded", "bitcoind-tests"]
 
 [workspace.metadata.rbmt.toolchains]
-nightly = "nightly-2026-08-21"
+nightly = "nightly-2026-09-12"
 stable = "1.95.0"
 
 [workspace.lints.clippy]