diff --git a/default.nix b/default.nix
index f374124..a28f759 100644
--- a/default.nix
+++ b/default.nix
@@ -1,16 +1,8 @@
 let
   bscOverlay = import ./overlay.nix;
 
-  commit = "d680ded26da5cf104dd2735a51e88d2d8f487b4d";
-
   # Pin the nixpkgs
-  nixpkgsPath = builtins.fetchTarball {
-    # Descriptive name to make the store path easier to identify
-    name = "nixpkgs-${commit}";
-    url = "https://github.com/nixos/nixpkgs/archive/${commit}.tar.gz";
-    # Hash obtained using `nix-prefetch-url --unpack <url>`
-    sha256 = "0xczslr40zy1wlg0ir8mwyyn5gz22i2f9dfd0vmgnk1664v4chky";
-  };
+  nixpkgsPath = import ./nixpkgs.nix;
 
   pkgs = import nixpkgsPath {
     overlays = [ bscOverlay ];
diff --git a/nixpkgs.nix b/nixpkgs.nix
new file mode 100644
index 0000000..37e5ebd
--- /dev/null
+++ b/nixpkgs.nix
@@ -0,0 +1,9 @@
+let
+  commit = "d680ded26da5cf104dd2735a51e88d2d8f487b4d";
+in builtins.fetchTarball {
+    # Descriptive name to make the store path easier to identify
+    name = "nixpkgs-${commit}";
+    url = "https://github.com/nixos/nixpkgs/archive/${commit}.tar.gz";
+    # Hash obtained using `nix-prefetch-url --unpack <url>`
+    sha256 = "0xczslr40zy1wlg0ir8mwyyn5gz22i2f9dfd0vmgnk1664v4chky";
+}