diff --git a/nix/configuration/flake.lock b/nix/configuration/flake.lock
index 92aebdf2..f3a3db17 100644
--- a/nix/configuration/flake.lock
+++ b/nix/configuration/flake.lock
@@ -190,11 +190,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1758690382,
-        "narHash": "sha256-NY3kSorgqE5LMm1LqNwGne3ZLMF2/ILgLpFr1fS4X3o=",
+        "lastModified": 1759381078,
+        "narHash": "sha256-gTrEEp5gEspIcCOx9PD8kMaF1iEmfBcTbO0Jag2QhQs=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e643668fd71b949c53f8626614b21ff71a07379d",
+        "rev": "7df7ff7d8e00218376575f0acdcc5d66741351ee",
         "type": "github"
       },
       "original": {
@@ -238,11 +238,11 @@
     },
     "nixpkgs-unoptimized": {
       "locked": {
-        "lastModified": 1758690382,
-        "narHash": "sha256-NY3kSorgqE5LMm1LqNwGne3ZLMF2/ILgLpFr1fS4X3o=",
+        "lastModified": 1759381078,
+        "narHash": "sha256-gTrEEp5gEspIcCOx9PD8kMaF1iEmfBcTbO0Jag2QhQs=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e643668fd71b949c53f8626614b21ff71a07379d",
+        "rev": "7df7ff7d8e00218376575f0acdcc5d66741351ee",
         "type": "github"
       },
       "original": {
diff --git a/nix/configuration/roles/distributed_build/default.nix b/nix/configuration/roles/distributed_build/default.nix
index 61914b18..6e20734e 100644
--- a/nix/configuration/roles/distributed_build/default.nix
+++ b/nix/configuration/roles/distributed_build/default.nix
@@ -58,12 +58,13 @@ in
               ];
               maxJobs = 1;
               supportedFeatures = [
-                # "nixos-test"
+                "nixos-test"
                 "benchmark"
                 "big-parallel"
                 # "kvm"
                 "gccarch-x86-64-v3"
                 "gccarch-x86-64-v4"
+                "gccarch-skylake"
                 "gccarch-znver4"
               ];
             }
@@ -86,12 +87,13 @@ in
               ];
               maxJobs = 1;
               supportedFeatures = [
-                # "nixos-test"
+                "nixos-test"
                 "benchmark"
                 "big-parallel"
-                # "kvm"
+                "kvm"
                 "gccarch-x86-64-v3"
                 "gccarch-x86-64-v4"
+                "gccarch-skylake"
                 "gccarch-znver4"
                 "gccarch-znver5"
               ];