diff --git a/default.nix b/default.nix
index 8369f43..3a72caa 100644
--- a/default.nix
+++ b/default.nix
@@ -1,11 +1,8 @@
 {
-  pkgs ? import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/22.05.tar.gz") {}
+  pkgs ? import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/22.11.tar.gz") {}
 } :
 with pkgs;
-let 
-  stdenv = gcc11Stdenv;
-in
-mkShell.override { inherit stdenv; } {
-  buildInputs = [ stdenv.glibc.static python3 ];
+mkShell.override { stdenv = gcc12Stdenv; } {
+  buildInputs = [ python3 ];
 }
 
diff --git a/deps.h b/deps.h
index 58c74fd..f09d4c0 100644
--- a/deps.h
+++ b/deps.h
@@ -22,4 +22,6 @@
 #include <iostream>
 #include <fstream>
 
+#include <cstring>
+
 #endif