diff --git a/configs/nix.nix b/configs/nix.nix
index 7463481..43dc658 100644
--- a/configs/nix.nix
+++ b/configs/nix.nix
@@ -1,7 +1,7 @@
-{ pkgs, ... }:
+{ pkgs, inputs, ... }:
 {
   nix = {
-    package = pkgs.nixVersions.nix_2_19;
+    package = inputs.unstable.legacyPackages.${pkgs.system}.nixVersions.nix_2_21;
     gc = {
       automatic = true;
       dates = "daily";
diff --git a/flake.lock b/flake.lock
index c4b7692..0c119f8 100644
--- a/flake.lock
+++ b/flake.lock
@@ -526,11 +526,11 @@
     },
     "unstable": {
       "locked": {
-        "lastModified": 1711429095,
-        "narHash": "sha256-xb7XhAHqs55Fve7/qkeKpBkpMoyhALFAhlGfEwvNNOw=",
+        "lastModified": 1711486535,
+        "narHash": "sha256-7HDFQdlb0RcELsOMHSoW7w8X+RlH7sc0l+YSGYurytY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "9ec2464a9a3aa8fefaad11aae6e7a519d2559b9e",
+        "rev": "74518d2bf610de186cc000d1d479cb975e5a9ffc",
         "type": "github"
       },
       "original": {
@@ -541,11 +541,11 @@
     },
     "unstableSmall": {
       "locked": {
-        "lastModified": 1711333969,
-        "narHash": "sha256-5PiWGn10DQjMZee5NXzeA6ccsv60iLu+Xtw+mfvkUAs=",
+        "lastModified": 1711437523,
+        "narHash": "sha256-lzKaFdlecRjS580jFQfY0TeOQknROUfhUJKpVdXEQGY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "57e6b3a9e4ebec5aa121188301f04a6b8c354c9b",
+        "rev": "034253ed29c57858b532c2dffb205aa31651b819",
         "type": "github"
       },
       "original": {
diff --git a/hosts/europa/default.nix b/hosts/europa/default.nix
index 5423ea1..a46bba7 100644
--- a/hosts/europa/default.nix
+++ b/hosts/europa/default.nix
@@ -234,12 +234,9 @@ in
       };
     };
     fprintd = {
-      enable = true;
+      enable = false;
       package = pkgs.fprintd.overrideAttrs {
-        mesonCheckFlags = [
-          "--no-suite"
-          "fprintd:TestPamFprintd"
-        ];
+        doCheck = false;
       };
     };
     avahi = {