diff --git a/flake.lock b/flake.lock
index 6c5c323..7ad11e6 100644
--- a/flake.lock
+++ b/flake.lock
@@ -22,11 +22,11 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1604567911,
-        "narHash": "sha256-i4KPJvKhCn6fndh/1NominnKqIZvy0EYHJM8GEEdic4=",
+        "lastModified": 1604964115,
+        "narHash": "sha256-ANcswniHS4eYeMNyCGdiG3z0M35vEyvWoCsdLnTvObA=",
         "owner": "NixOS",
         "repo": "nix",
-        "rev": "387f824cab50682e373ade49dcec4e6f99c10a42",
+        "rev": "0ed7c957bed18d963df65d55f0c0ffc79dee656d",
         "type": "github"
       },
       "original": {
@@ -34,11 +34,36 @@
         "type": "indirect"
       }
     },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1602702596,
+        "narHash": "sha256-fqJ4UgOb4ZUnCDIapDb4gCrtAah5Rnr2/At3IzMitig=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "ad0d20345219790533ebe06571f82ed6b034db31",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-20.09-small",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "narHash": "sha256-wLDweKqbmufa2wonCKBf4Wfl8I0eS1CGS7WdR5tPHKo=",
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/60330b60655b3fa3a18624bdd7069855bb37af99.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/60330b60655b3fa3a18624bdd7069855bb37af99.tar.gz"
+      }
+    },
     "root": {
       "inputs": {
         "nix": "nix",
-        "nixpkgs": "nixpkgs_2",
-        "nixpkgs-git": "nixpkgs-git"
+        "nixpkgs": "nixpkgs_2"
       }
     }
   },
diff --git a/flake.nix b/flake.nix
index 86b6b65..281d773 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,11 +7,12 @@
     defaultPackage.x86_64-linux =
       let pkgs = import nixpkgs { system = "x86_64-linux"; config = { allowUnfree = true; }; }; in
       (pkgs.callPackage ./nixGL.nix {
-        nvidiaVersion = "455.28";
         nvidiaVersionFile = null;
-        nvidiaHash = "03ysf61qrb272yqkn7bhn9d65lcfhmqc2c0dbh5prp5f2ndlkqg4";
+        nvidiaVersion = "455.28"; nvidiaHash = "03ysf61qrb272yqkn7bhn9d65lcfhmqc2c0dbh5prp5f2ndlkqg4";
+        # nvidiaVersion = "455.23.04"; nvidiaHash = "0rvbb9s4ijb0gyiscd93chbgim4lqmy4ksfy15b4abf078qk7q4g";
+        # …
         enable32bits = true;
-      }).nixGLIntel; #nixGLNvidia
+      }).nixGLIntel; # nixGLNvidia;
      # nixpkgs.stdenv.mkDerivation {
      #   builsInputs = [];
      #   { ## Nvidia informations.