diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..aeac126
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,78 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1690470004,
+        "narHash": "sha256-l57RmPhPz9r1LGDg/0v8bYgJO8R+GGTQZtkIxE7negU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9462344318b376e157c94fa60c20a25b913b2381",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "release-23.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-stable": {
+      "locked": {
+        "lastModified": 1690066826,
+        "narHash": "sha256-6L2qb+Zc0BFkh72OS9uuX637gniOjzU6qCDBpjB2LGY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "ce45b591975d070044ca24e3003c830d26fea1c8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "release-23.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1690026219,
+        "narHash": "sha256-oOduRk/kzQxOBknZXTLSEYd7tk+GoKvr8wV6Ab+t4AU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "f465da166263bc0d4b39dfd4ca28b777c92d4b73",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "sops-nix": "sops-nix"
+      }
+    },
+    "sops-nix": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_2",
+        "nixpkgs-stable": "nixpkgs-stable"
+      },
+      "locked": {
+        "lastModified": 1690199016,
+        "narHash": "sha256-yTLL72q6aqGmzHq+C3rDp3rIjno7EJZkFLof6Ika7cE=",
+        "owner": "Mic92",
+        "repo": "sops-nix",
+        "rev": "c36df4fe4bf4bb87759b1891cab21e7a05219500",
+        "type": "github"
+      },
+      "original": {
+        "id": "sops-nix",
+        "type": "indirect"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
index 49fd82a..5b232fa 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,4 +1,9 @@
 {
+  inputs = {
+    nixpkgs = {
+      url = "github:NixOS/nixpkgs/release-23.05";
+    };
+  };
   outputs = { self, nixpkgs, sops-nix }: {
     nixosConfigurations.kcnhub = nixpkgs.lib.nixosSystem {
       system = "x86_64-linux";