diff --git a/flake.lock b/flake.lock
index e1c84df..397532f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -105,16 +105,15 @@
         ]
       },
       "locked": {
-        "lastModified": 1772870050,
-        "narHash": "sha256-il+K3xjwpb68ojPNt5yEF+TqTHWAiIBaXU0QMhw5ek8=",
+        "lastModified": 1772846660,
+        "narHash": "sha256-BX9ZWoUvpamj2CJpQqqEnpjci1BukYd71UFdj5JXn8c=",
         "owner": "cry128",
         "repo": "cerulean",
-        "rev": "7bd81f84e6c0c47e62e3498508e018d2a1a8c7e4",
+        "rev": "d9432d87a460c4f6dfb2602bba7e98267c2a0132",
         "type": "github"
       },
       "original": {
         "owner": "cry128",
-        "ref": "bleeding",
         "repo": "cerulean",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index cd28d3d..eb592da 100644
--- a/flake.nix
+++ b/flake.nix
@@ -16,7 +16,7 @@
     nt.url = "git+https://tearforge.net/cry/nt";
 
     cerulean = {
-      url = "github:cry128/cerulean/bleeding";
+      url = "github:cry128/cerulean";
       inputs = {
         nt.follows = "nt";
         systems.follows = "systems";
diff --git a/nixpkgs.nix b/nixpkgs.nix
index c7c2e70..15c127a 100644
--- a/nixpkgs.nix
+++ b/nixpkgs.nix
@@ -1,15 +1,11 @@
 {
   lib,
   inputs,
+  system,
   ...
 } @ args: {
-  nixpkgs.channels = rec {
-    # base
-    base = npkgs;
-
-    # nixpkgs-stable
-    npkgs = {
-      source = inputs.nixpkgs;
+  nixpkgs.channels = {
+    default = {
       overlays = [
         inputs.dobutterfliescry-net.overlays.default
         (import ./overlays args)
@@ -33,8 +29,10 @@
 
     # nixpkgs-unstable
     upkgs = {
+      inherit system;
       source = inputs.nixpkgs-unstable;
       overlays = [
+        inputs.dobutterfliescry-net.overlays.default
         inputs.millennium.overlays.default
         (import ./overlays args)
       ];
@@ -46,6 +44,7 @@
 
     # nixpkgs-master
     mpkgs = {
+      inherit system;
       source = inputs.nixpkgs-master;
       overlays = [];
       config = {