diff --git a/flake.lock b/flake.lock
index c717b0a..7ce01b3 100644
--- a/flake.lock
+++ b/flake.lock
@@ -36,6 +36,26 @@
         "type": "github"
       }
     },
+    "globset": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1729844927,
+        "narHash": "sha256-nBkQx23jgpGPk3aU2KcqJCoYvzjsKEjWBePmc2z8N3k=",
+        "owner": "pdtpartners",
+        "repo": "globset",
+        "rev": "eb9d9e64b7ab0a64c34ba4a5a990b66506401c35",
+        "type": "github"
+      },
+      "original": {
+        "owner": "pdtpartners",
+        "repo": "globset",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1717696253,
@@ -55,6 +75,7 @@
       "inputs": {
         "flake-compat": "flake-compat",
         "flake-parts": "flake-parts",
+        "globset": "globset",
         "nixpkgs": "nixpkgs"
       }
     }
diff --git a/flake.nix b/flake.nix
index 8b542b1..a54b063 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,6 +3,10 @@
 
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-24.05";
+    globset = {
+      url = "github:pdtpartners/globset";
+      inputs.nixpkgs-lib.follows = "nixpkgs";
+    };
     flake-parts = {
       url = "github:hercules-ci/flake-parts";
       inputs.nixpkgs-lib.follows = "nixpkgs";
diff --git a/modules/flake/overlays.nix b/modules/flake/overlays.nix
index addbaab..2b75f00 100644
--- a/modules/flake/overlays.nix
+++ b/modules/flake/overlays.nix
@@ -1,24 +1,23 @@
 { self, inputs, ... }:
 {
   # Provide overlay to add `nix-snapshotter`.
-  flake.overlays.default = self: super:
-    let
-
-    in {
-      nix-snapshotter = self.callPackage ../../package.nix {};
+  flake.overlays.default = self: super: {
+    nix-snapshotter = self.callPackage ../../package.nix {
+      inherit (inputs) globset;
+    };
 
-      k3s = super.k3s_1_30.override {
-        buildGoModule = args: super.buildGoModule (args // super.lib.optionalAttrs (args.pname != "k3s-cni-plugins" && args.pname != "k3s-containerd") {
-          vendorHash = {
-            "sha256-XtTahFaWnuHzKDI/U4d/j4C4gRxH163MCGEEM4hu/WM=" = "sha256-XuMP+ffwTdXKL9q9+ZJUQc5ghGEcdY9UdefjCD19OUE=";
-            "sha256-Mj9Q3TgqZoJluG4/nyuw2WHnB3OJ+/mlV7duzWt1B1A=" = "sha256-9i0vY+CqrLDKYBZPooccX7OtFhS3//mpKTLntvPYDJo=";
-          }.${args.vendorHash};
-          patches = (args.patches or []) ++ [
-            ./patches/k3s-nix-snapshotter.patch
-          ];
-        });
-      };
+    k3s = super.k3s_1_30.override {
+      buildGoModule = args: super.buildGoModule (args // super.lib.optionalAttrs (args.pname != "k3s-cni-plugins" && args.pname != "k3s-containerd") {
+        vendorHash = {
+          "sha256-XtTahFaWnuHzKDI/U4d/j4C4gRxH163MCGEEM4hu/WM=" = "sha256-XuMP+ffwTdXKL9q9+ZJUQc5ghGEcdY9UdefjCD19OUE=";
+          "sha256-Mj9Q3TgqZoJluG4/nyuw2WHnB3OJ+/mlV7duzWt1B1A=" = "sha256-9i0vY+CqrLDKYBZPooccX7OtFhS3//mpKTLntvPYDJo=";
+        }.${args.vendorHash};
+        patches = (args.patches or []) ++ [
+          ./patches/k3s-nix-snapshotter.patch
+        ];
+      });
     };
+  };
 
   perSystem = { system, ... }: {
     _module.args.pkgs = import inputs.nixpkgs {
diff --git a/package.nix b/package.nix
index 9ff1f5c..ab0a7f6 100644
--- a/package.nix
+++ b/package.nix
@@ -1,6 +1,7 @@
 { lib
 , buildGoModule
 , closureInfo
+, globset
 , runCommand
 , writeShellScriptBin
 , writeText
@@ -9,13 +10,14 @@
 let
   nix-snapshotter = buildGoModule {
     pname = "nix-snapshotter";
-    version = "0.2.0";
-    src = lib.cleanSourceWith {
-      src = lib.sourceFilesBySuffices ./. [
-        ".go"
+    version = "0.2.1";
+    src = lib.fileset.toSource {
+      root = ./.;
+      fileset = globset.lib.globs ./. [
+        "**/*.go"
+        "**/*.tar"
         "go.mod"
         "go.sum"
-        ".tar"
       ];
     };
     vendorHash = "sha256-QBLePOnfsr6I19ddyZNSFDih6mCaZ/NV2Qz1B1pSHxs=";