diff --git a/flake.nix b/flake.nix
index 65c43600..91b153c6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -31,7 +31,7 @@
         deno = unstable.legacyPackages.${system}.deno;
 
         rustPkgs = pkgs.rustBuilder.makePackageSet {
-          rustVersion = "1.64.0";
+          rustVersion = "1.66.1";
           packageFun = import ./Cargo.nix;
         };