diff --git a/README.md b/README.md
index 5e8f017..a43053e 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ My bundix [fork](https://github.com/sagittaros/bundix) is needed to generate the
 
 ``` sh
 # installation
-nix profile install github:sagittaros/bundix
+nix profile install github:sagittaros/bundix/main
 
 # upgrade
 nix profile upgrade '.*'
@@ -61,7 +61,7 @@ With nix [installed](/docs/nix-installation.md) and optionally [direnv](/docs/di
 
 ``` sh
 cd myapp
-nix flake init -t github:sagittaros/ruby-nix
+nix flake init -t github:sagittaros/ruby-nix/main
 ```
 
 #### 2. Enter nix shell
diff --git a/flake.lock b/flake.lock
index deabea5..082e562 100644
--- a/flake.lock
+++ b/flake.lock
@@ -3,18 +3,21 @@
     "bundix": {
       "inputs": {
         "fu": "fu",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": [
+          "nixpkgs"
+        ]
       },
       "locked": {
-        "lastModified": 1678436065,
-        "narHash": "sha256-ULUUoluUkwqCcoYHH3mLsuakxo5dIQF7puzCj0TitCU=",
+        "lastModified": 1678444975,
+        "narHash": "sha256-NKIpaNozIm+1i0vkdhIsXLQxvVKtOfStZlb2BJmDHqA=",
         "owner": "sagittaros",
         "repo": "bundix",
-        "rev": "8c42eaac2d5632f545e174dcb5c01f05930b3758",
+        "rev": "8cea9709a06a458179f9677c244801ed944c2fc9",
         "type": "github"
       },
       "original": {
         "owner": "sagittaros",
+        "ref": "main",
         "repo": "bundix",
         "type": "github"
       }
@@ -36,27 +39,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1678298120,
-        "narHash": "sha256-iaV5xqgn29xy765Js3EoZePQyZIlLZA3pTYtTnKkejg=",
+        "lastModified": 1678418513,
+        "narHash": "sha256-HLLR2Fmkn3TgD0F+u5gMcTKx5YzAU1rbS4cLfm6ugiU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "1e383aada51b416c6c27d4884d2e258df201bc11",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1678298120,
-        "narHash": "sha256-iaV5xqgn29xy765Js3EoZePQyZIlLZA3pTYtTnKkejg=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "1e383aada51b416c6c27d4884d2e258df201bc11",
+        "rev": "5496585eb876f2ce97654bc8f96838c6f8642563",
         "type": "github"
       },
       "original": {
@@ -67,7 +54,7 @@
     "root": {
       "inputs": {
         "bundix": "bundix",
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": "nixpkgs"
       }
     }
   },
diff --git a/flake.nix b/flake.nix
index 263f522..989d051 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,7 +5,10 @@
     nixpkgs.url = "nixpkgs";
 
     # a fork that supports platform dependant gem
-    bundix.url = "github:sagittaros/bundix";
+    bundix = {
+      url = "github:sagittaros/bundix/main";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs = { self, nixpkgs, bundix }: {