diff --git a/rust/flake.lock b/rust/flake.lock
index bb93e1f..d4642c5 100644
--- a/rust/flake.lock
+++ b/rust/flake.lock
@@ -79,11 +79,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1721614891,
-        "narHash": "sha256-1yGOh8w/yhWAZ2NJR9N/shQ1tx2n9fmGe0XrDE00i9U=",
+        "lastModified": 1726712837,
+        "narHash": "sha256-Ob7DNyHKtOQpWetmNj/V+OgMkGXh6Ep1dNa6AN/4sSI=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "424a759557ed4c01cf9dbbf79a714150d64a90ad",
+        "rev": "6283b1d6ca31fa320ecee82806123e773b2ff993",
         "type": "github"
       },
       "original": {
diff --git a/rust/rust-toolchain.toml b/rust/rust-toolchain.toml
index 15a3c10..b1aa884 100644
--- a/rust/rust-toolchain.toml
+++ b/rust/rust-toolchain.toml
@@ -7,7 +7,7 @@
 #   nix flake lock --update-input rust-overlay
 #
 # when changing these to more recent versions
-channel = "1.79.0"
+channel = "1.81.0"
 #channel = "nightly-2024-07-21"
 
 # see https://rust-lang.github.io/rustup/concepts/profiles.html