diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ed4654c..bd5b3fe 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -77,6 +77,40 @@ jobs:
       - name: Build
         run: cargo build --release
 
+  nix:
+    name: Nix Build
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Check for Nix-relevant changes
+        uses: dorny/paths-filter@v3
+        id: filter
+        with:
+          filters: |
+            nix:
+              - 'flake.nix'
+              - 'flake.lock'
+              - 'Cargo.toml'
+              - 'Cargo.lock'
+              - 'src/**'
+              - 'tests/**'
+
+      - name: Install Nix
+        if: steps.filter.outputs.nix == 'true'
+        uses: DeterminateSystems/determinate-nix-action@v3
+
+      - name: Setup Nix cache
+        if: steps.filter.outputs.nix == 'true'
+        uses: DeterminateSystems/magic-nix-cache-action@v8
+        with:
+          use-flakehub: false
+
+      - name: Check flake
+        if: steps.filter.outputs.nix == 'true'
+        run: nix flake check
+
   # E2E tests run only on main branch with secrets
   e2e:
     name: E2E Tests
diff --git a/.github/workflows/update-flake-lock.yml b/.github/workflows/update-flake-lock.yml
new file mode 100644
index 0000000..30d493d
--- /dev/null
+++ b/.github/workflows/update-flake-lock.yml
@@ -0,0 +1,22 @@
+name: Update flake.lock
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 0 1 * *' # Monthly on the 1st
+
+jobs:
+  update:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: DeterminateSystems/determinate-nix-action@v3
+      - uses: DeterminateSystems/update-flake-lock@main
+        with:
+          pr-title: "nix: update flake.lock"
+          pr-labels: |
+            dependencies
+            nix
diff --git a/.gitignore b/.gitignore
index 2cda5b5..2f82f00 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,9 @@
 /target
 .DS_Store
 
+# Nix
+result
+
 # Generated npm platform packages
 /npm/darwin-arm64/
 /npm/darwin-x64/
diff --git a/README.md b/README.md
index 01cc1a6..ecdfc12 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,33 @@ cargo install jj-ryu
 
 Binary name is `ryu`.
 
+### Nix
+
+```sh
+# Try it
+nix run github:dmmulroy/jj-ryu
+
+# Install to profile
+nix profile install github:dmmulroy/jj-ryu
+```
+
+Or add to your flake inputs:
+
+```nix
+{
+  inputs.jj-ryu.url = "github:dmmulroy/jj-ryu";
+
+  outputs = { self, nixpkgs, jj-ryu, ... }: {
+    nixosConfigurations.myhost = nixpkgs.lib.nixosSystem {
+      modules = [{
+        nixpkgs.overlays = [ jj-ryu.overlays.default ];
+        environment.systemPackages = [ pkgs.jj-ryu ];
+      }];
+    };
+  };
+}
+```
+
 ## Quick start
 
 ```sh
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..29eae42
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,96 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1768395095,
+        "narHash": "sha256-ZhuYJbwbZT32QA95tSkXd9zXHcdZj90EzHpEXBMabaw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "13868c071cc73a5e9f610c47d7bb08e5da64fdd5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1744536153,
+        "narHash": "sha256-awS2zRgF4uTwrOKwwiJcByDzDOdo3Q1rPZbiHQg/N38=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "18dd725c29603f582cf1900e0d25f9f1063dbf11",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1768531678,
+        "narHash": "sha256-tf4xEp5Zq8+Zce0WtU8b0VNMxhQtwes67sN2phnbkpk=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "0a9de73f3c23206a2fce3c7656a42d3a3f07be9f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..ad58448
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,100 @@
+{
+  description = "jj-ryu - Stacked PRs CLI for Jujutsu";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      rust-overlay,
+      flake-utils,
+    }:
+    {
+      overlays.default = final: prev: {
+        jj-ryu = self.packages.${final.system}.ryu;
+      };
+    }
+    // flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs { inherit system overlays; };
+        lib = pkgs.lib;
+
+        rust = pkgs.rust-bin.stable."1.89.0".default;
+        rustPlatform = pkgs.makeRustPlatform {
+          cargo = rust;
+          rustc = rust;
+        };
+
+        version = (builtins.fromTOML (builtins.readFile ./Cargo.toml)).package.version;
+        versionSuffix = if self ? rev then "-${builtins.substring 0 7 self.rev}" else "-dirty";
+
+        src = pkgs.lib.fileset.toSource {
+          root = ./.;
+          fileset = pkgs.lib.fileset.unions [
+            ./Cargo.toml
+            ./Cargo.lock
+            ./src
+            ./tests
+          ];
+        };
+
+        meta = with pkgs.lib; {
+          description = "Stacked PRs for Jujutsu with GitHub/GitLab support";
+          homepage = "https://github.com/dmmulroy/jj-ryu";
+          changelog = "https://github.com/dmmulroy/jj-ryu/releases/tag/v${version}";
+          license = licenses.mit;
+          maintainers = [ ];
+          mainProgram = "ryu";
+          platforms = platforms.unix;
+        };
+
+        ryu = rustPlatform.buildRustPackage {
+          pname = "jj-ryu";
+          version = "${version}${versionSuffix}";
+          inherit src meta;
+          cargoLock = {
+            lockFile = ./Cargo.lock;
+          };
+          nativeBuildInputs = [
+            pkgs.pkg-config
+            pkgs.jujutsu
+            pkgs.git
+          ];
+          buildInputs = lib.optionals pkgs.stdenv.isDarwin [ pkgs.libiconv ];
+          doCheck = true;
+        };
+      in
+      {
+        packages = {
+          default = ryu;
+          ryu = ryu;
+        };
+
+        apps.default = flake-utils.lib.mkApp { drv = ryu; };
+        apps.ryu = flake-utils.lib.mkApp { drv = ryu; };
+
+        checks = {
+          ryu = ryu;
+        };
+
+        devShells.default = pkgs.mkShell {
+          inputsFrom = [ ryu ];
+          packages = [
+            rust
+            pkgs.pkg-config
+            pkgs.rust-analyzer
+            pkgs.cargo-watch
+          ];
+        };
+
+        formatter = pkgs.nixfmt-rfc-style;
+      }
+    );
+}