diff --git a/.gitmodules b/.gitmodules
index 033d30c5..57f7987b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "nixpkgs"]
 	path = nixpkgs
 	url = https://github.com/CHN-beta/nixpkgs.git
+[submodule "packages/ufo"]
+	path = packages/ufo
+	url = https://git.chn.moe/chn/ufo.git
diff --git a/flake.lock b/flake.lock
index 37ee9925..b15d853a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1491,7 +1491,6 @@
         "sticker": "sticker",
         "stickerpicker": "stickerpicker",
         "tgbot-cpp": "tgbot-cpp",
-        "ufo": "ufo",
         "v-sim": "v-sim",
         "vaspberry": "vaspberry",
         "winapps": "winapps",
@@ -1777,24 +1776,6 @@
         "type": "github"
       }
     },
-    "ufo": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1767597695,
-        "lfs": true,
-        "narHash": "sha256-JNCSBKjslaT4kjMCWCImN1iS9ZRwfCN4GpP7dWECdas=",
-        "ref": "refs/heads/main",
-        "rev": "19736049c9e117c642f3f0a5e81af5cf2a40b392",
-        "revCount": 86,
-        "type": "git",
-        "url": "https://git.chn.moe/chn/ufo.git"
-      },
-      "original": {
-        "lfs": true,
-        "type": "git",
-        "url": "https://git.chn.moe/chn/ufo.git"
-      }
-    },
     "v-sim": {
       "flake": false,
       "locked": {
diff --git a/flake.nix b/flake.nix
index d8558973..5b5152a1 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,7 +3,7 @@
 
   inputs =
   {
-    self.submodules = true;
+    self = { submodules = true; lfs = true; };
     nixpkgs.url = ./nixpkgs;
     nixpkgs-2505.url = "github:CHN-beta/nixpkgs/nixos-25.05";
     nixpkgs-2411.url = "github:CHN-beta/nixpkgs/nixos-24.11";
@@ -54,7 +54,6 @@
     pocketfft = { url = "github:mreineck/pocketfft"; flake = false; };
     blog = { url = "git+https://git.chn.moe/chn/blog-public.git?lfs=1"; flake = false; };
     vaspberry = { url = "github:Infant83/VASPBERRY"; flake = false; };
-    ufo = { url = "git+https://git.chn.moe/chn/ufo.git?lfs=1"; flake = false; };
     stickerpicker = { url = "github:maunium/stickerpicker"; flake = false; };
     fancy-motd = { url = "github:CHN-beta/fancy-motd"; flake = false; };
     mac-style = { url = "github:SergioRibera/s4rchiso-plymouth-theme?lfs=1"; flake = false; };
diff --git a/packages/default.nix b/packages/default.nix
index 3e590ec1..e0f8220b 100644
--- a/packages/default.nix
+++ b/packages/default.nix
@@ -72,7 +72,7 @@ inputs: rec
   sqlite-orm = inputs.pkgs.callPackage ./sqlite-orm.nix { src = inputs.topInputs.sqlite-orm; };
   mkPnpmPackage = inputs.pkgs.callPackage ./mkPnpmPackage.nix {};
   sbatch-tui = inputs.pkgs.callPackage ./sbatch-tui { inherit biu; };
-  ufo = inputs.pkgs.callPackage inputs.topInputs.ufo { inherit biu matplotplusplus; tbb = inputs.pkgs.tbb_2022; };
+  ufo = inputs.pkgs.callPackage ./ufo { inherit biu matplotplusplus; tbb = inputs.pkgs.tbb_2022; };
   chn-bsub = inputs.pkgs.callPackage ./chn-bsub { inherit biu; };
   py4vasp = inputs.pkgs.python3Packages.callPackage ./py4vasp.nix { src = inputs.topInputs.py4vasp; };
   pocketfft = inputs.pkgs.callPackage ./pocketfft.nix { src = inputs.topInputs.pocketfft; };
diff --git a/packages/ufo b/packages/ufo
new file mode 160000
index 00000000..19736049
--- /dev/null
+++ b/packages/ufo
@@ -0,0 +1 @@
+Subproject commit 19736049c9e117c642f3f0a5e81af5cf2a40b392