diff --git a/README.md b/README.md
index b3eb94dc..16573283 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 Attempts to get NixOS up on M1 Macs.
 
-* [UEFI Boot Standalone NixOS (2022-08-14)](docs/uefi-standalone.md)
+* [UEFI Boot Standalone NixOS (2022-09-18)](docs/uefi-standalone.md)
 
 ## Credits
 
diff --git a/docs/uefi-standalone.md b/docs/uefi-standalone.md
index 926b0216..7e342223 100644
--- a/docs/uefi-standalone.md
+++ b/docs/uefi-standalone.md
@@ -1,10 +1,10 @@
-# UEFI Boot Standalone NixOS (2022-08-14)
+# UEFI Boot Standalone NixOS (2022-09-20)
 
 This guide will build and was tested with the following software:
 * Asahi Linux kernel version 5.19.0-asahi
 * m1n1 version v1.1.4
 * Asahi Linux's U-Boot version 2022.07_rc100.asahi3
-* Nixpkgs, as of 2022-08-03
+* Nixpkgs, as of 2022-09-18
 * macOS stub 12.3
 
 NOTE: The latest version of this guide will always be [at its home](https://github.com/tpwrules/nixos-m1/blob/main/docs/uefi-standalone.md). For more general information about Linux on Apple Silicon Macs, refer to the [Asahi Linux project](https://asahilinux.org/) and [alpha installer release](https://asahilinux.org/2022/03/asahi-linux-alpha-release/).
diff --git a/nix/pins.nix b/nix/pins.nix
index 20ec0cca..e8f5378e 100644
--- a/nix/pins.nix
+++ b/nix/pins.nix
@@ -2,9 +2,9 @@
   # https://hydra.nixos.org/jobset/mobile-nixos/unstable/evals
   # these evals have a cross-compiled stdenv available
   nixpkgs = fetchTarball {
-    name   = "nixpkgs-unstable-2022-08-13";
-    url    = "https://github.com/NixOS/nixpkgs/archive/c4a0efdd5a728e20791b8d8d2f26f90ac228ee8d.tar.gz";
-    sha256 = "sha256:0rg066r8hx882hlhi4yvz6d8nyww7cqbjknyrsk0w44jj2jzaidg";
+    name   = "nixpkgs-unstable-2022-09-18";
+    url    = "https://github.com/NixOS/nixpkgs/archive/f677051b8dc0b5e2a9348941c99eea8c4b0ff28f.tar.gz";
+    sha256 = "sha256:18zycb8zxnz20g683fgbvckckr7rmq7c1gf96c06fp8pmaak0akx";
   };
 
   rust-overlay = fetchTarball {