diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index a5f9492..251338f 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,4 +1,4 @@
 [toolchain]
-channel = "nightly"
+channel = "nightly-2026-05-23"
 profile = "default"
 components = ["clippy", "rustfmt"]