diff --git a/flake.lock b/flake.lock
index 6e5828d..fadda13 100644
--- a/flake.lock
+++ b/flake.lock
@@ -139,34 +139,28 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1745526780,
-        "narHash": "sha256-LXXYBmFPMQU2lTb6alKWfjgQs08BKn+txMNcgbu00hI=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "9204750b34cae1a8347ab4b5588115edfeebc6d7",
-        "type": "github"
+        "lastModified": 1748615477,
+        "narHash": "sha256-8sjG4sNIonQPK2olCGvq3/j1qtjwPaTOFU5nkz1gj2Q=",
+        "rev": "97d3ce1ceb663a24184aac92b7e9e8f5452111c1",
+        "type": "tarball",
+        "url": "https://releases.nixos.org/nixos/24.11-small/nixos-24.11.718472.97d3ce1ceb66/nixexprs.tar.xz?rev=97d3ce1ceb663a24184aac92b7e9e8f5452111c1"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixos-24.11-small",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://nixos.org/channels/nixos-24.11-small/nixexprs.tar.xz"
       }
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1745688173,
-        "narHash": "sha256-fgvG1O5JvSSjeQx+ea0DJ3GfMbLPVhAQta/DqQ2y6jc=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "6a2957c7978b189202e03721aab901c0a9dc1e1a",
-        "type": "github"
+        "lastModified": 1748588304,
+        "narHash": "sha256-YCnUqO9k39p0oMIBndxYTbu8m0fOA/KVcq3IekXPy9c=",
+        "rev": "b8af95f4cf511c5f056b463c3a45d2b63c7cfb03",
+        "type": "tarball",
+        "url": "https://releases.nixos.org/nixos/unstable-small/nixos-25.11pre807945.b8af95f4cf51/nixexprs.tar.xz?rev=b8af95f4cf511c5f056b463c3a45d2b63c7cfb03"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixos-unstable-small",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://nixos.org/channels/nixos-unstable-small/nixexprs.tar.xz"
       }
     },
     "pvv-calendar-bot": {