diff --git a/.envrc b/.envrc
index 1d953f4..3550a30 100644
--- a/.envrc
+++ b/.envrc
@@ -1 +1 @@
-use nix
+use flake
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..0b27cdc
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1734083684,
+        "narHash": "sha256-5fNndbndxSx5d+C/D0p/VF32xDiJCJzyOqorOYW4JEo=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "314e12ba369ccdb9b352a4db26ff419f7c49fa84",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-24.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..265c47a
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,34 @@
+{
+  description = "spectrum-analyzer Rust crate";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
+  };
+
+  outputs =
+    { self, nixpkgs }@inputs:
+    {
+      devShells.x86_64-linux.default =
+        let
+          pkgs = inputs.nixpkgs.legacyPackages.x86_64-linux;
+
+          # Mainly runtime deps of the examples, not the base lib.
+          runtimeDeps = with pkgs; [
+            alsa-lib
+            fontconfig
+            libxkbcommon
+            xorg.libXcursor
+            xorg.libX11
+          ];
+        in
+        pkgs.mkShell {
+          packages =
+            with pkgs;
+            [
+              pkg-config
+            ]
+            ++ runtimeDeps;
+          LD_LIBRARY_PATH = "${pkgs.lib.makeLibraryPath runtimeDeps}";
+        };
+    };
+}
diff --git a/shell.nix b/shell.nix
deleted file mode 100644
index 59bf4be..0000000
--- a/shell.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ pkgs ? import <nixpkgs> {} }:
-  pkgs.mkShell rec {
-    nativeBuildInputs = with pkgs; [
-      pkg-config
-      cargo-nextest
-    ];
-
-    buildInputs = with pkgs; [
-      alsa-lib
-      fontconfig
-      libxkbcommon
-      xorg.libXcursor
-      xorg.libX11
-    ];
-
-  LD_LIBRARY_PATH = "${pkgs.lib.makeLibraryPath buildInputs}";
-}