diff --git a/modules/nixpkgs/overlays/rust-toolchain b/modules/nixpkgs/overlays/rust-toolchain
index b852f1945..1af93d740 100644
--- a/modules/nixpkgs/overlays/rust-toolchain
+++ b/modules/nixpkgs/overlays/rust-toolchain
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2026-06-01"
+channel = "nightly-2026-07-27"
 components = [ "rustc-dev", "llvm-tools-preview", "rust-src", "miri" ]