diff --git a/default.nix b/default.nix
index d04dfad..1c05102 100644
--- a/default.nix
+++ b/default.nix
@@ -75,7 +75,10 @@ in
           with pkgs;
           [
             npins
-            nixos-generators
+            (nixos-generators.overrideAttrs (_: {
+              version = "1.8.0-unstable";
+              src = builtins.storePath sources.nixos-generators;
+            }))
             attic-client
           ]
           ++ (builtins.map (p: callPackage p { }) [
diff --git a/npins/sources.json b/npins/sources.json
index 3db1163..f3c95ff 100644
--- a/npins/sources.json
+++ b/npins/sources.json
@@ -9,6 +9,7 @@
       },
       "pre_releases": false,
       "version_upper_bound": null,
+      "release_prefix": null,
       "version": "0.15.0",
       "revision": "564595d0ad4be7277e07fa63b5a991b3c645655d",
       "url": "https://api.github.com/repos/ryantm/agenix/tarball/0.15.0",
@@ -47,6 +48,7 @@
       },
       "pre_releases": false,
       "version_upper_bound": null,
+      "release_prefix": null,
       "version": "v1.6.0",
       "revision": "5eaf747af38dd272e1ab28a8ec4bd972424b07cf",
       "url": "https://api.github.com/repos/nix-community/disko/tarball/v1.6.0",
@@ -60,6 +62,7 @@
       },
       "pre_releases": false,
       "version_upper_bound": null,
+      "release_prefix": null,
       "version": "v1.2.1",
       "revision": "66979725afe2164491be38ffff78460cc9b0ffd7",
       "url": null,
@@ -108,6 +111,7 @@
       },
       "pre_releases": false,
       "version_upper_bound": null,
+      "release_prefix": null,
       "version": "0.1.6",
       "revision": "ffb3dfa4c146d48300bd4fa625acfe48e091a734",
       "url": null,
@@ -132,6 +136,7 @@
       },
       "pre_releases": false,
       "version_upper_bound": null,
+      "release_prefix": null,
       "version": "v0.5.0",
       "revision": "e11ba20945f4a867f09d84343c37328288f274b4",
       "url": null,
@@ -143,6 +148,18 @@
       "url": "https://releases.nixos.org/nixos/23.11/nixos-23.11.6981.27c13997bf45/nixexprs.tar.xz",
       "hash": "1s4wn0m6bdzxl4rcxzmyy2fdschrdj3nqy6zl85xynaxkb0n1gpj"
     },
+    "nixos-generators": {
+      "type": "Git",
+      "repository": {
+        "type": "GitHub",
+        "owner": "nix-community",
+        "repo": "nixos-generators"
+      },
+      "branch": "master",
+      "revision": "35c20ba421dfa5059e20e0ef2343c875372bdcf3",
+      "url": "https://github.com/nix-community/nixos-generators/archive/35c20ba421dfa5059e20e0ef2343c875372bdcf3.tar.gz",
+      "hash": "17mc5q7rnnldals517b8m6qv9rcv0gdvh5zsnd6yvxmzm9s617ar"
+    },
     "nixos-unstable": {
       "type": "Channel",
       "name": "nixos-unstable",