diff --git a/index.ts b/index.ts
index 9e38aed..61b0b16 100755
--- a/index.ts
+++ b/index.ts
@@ -3,24 +3,30 @@ import { Setup } from "@/cli/setup";
 import { Doctor } from "@/cli/doctor";
 import { ModelCommand } from "@/cli/model";
 import { EffortCommand } from "@/cli/effort";
-import { parseArgs, showHelp, showVersion } from "@/cli/parser";
+import { Update } from "@/cli/update";
+import { type CliCommand, parseArgs, showHelp, showVersion } from "@/cli/parser";
 import { Future } from "@/libs/future";
+import { absurd } from "@/libs/types";
+import { checkUpdate } from "@/cli/show-update-banner";
 
 import color from "picocolors";
 
+const NOTIFIER_COMMANDS = new Set<CliCommand["type"]>(["generate", "setup", "doctor", "model", "effort"]);
+
 const main = () => {
   const args = process.argv.slice(2);
 
-  const actionFuture = parseArgs(args).either(
+  const action = parseArgs(args).either(
     (err): Future<Error, void> => {
       console.error(color.red(err.message));
-      showHelp();
       return Future.reject(err);
     },
     (command): Future<Error, void> => {
+      if (NOTIFIER_COMMANDS.has(command.type)) checkUpdate();
+
       switch (command.type) {
         case "generate":
-          return Commit.create().chain((flow) => flow.run());
+          return Commit.create().chain((c) => c.run());
         case "setup":
           return Setup.create().chain((s) => s.run());
         case "doctor":
@@ -29,21 +35,21 @@ const main = () => {
           return ModelCommand.create().chain((m) => m.run());
         case "effort":
           return EffortCommand.create().chain((e) => e.run());
+        case "update":
+          return Update.create().run();
         case "version":
           showVersion();
           return Future.resolve(undefined);
         case "help":
           showHelp();
           return Future.resolve(undefined);
-        default: {
-          const _exhaustiveCheck: never = command;
-          return Future.reject(new Error(`Unhandled command: ${JSON.stringify(_exhaustiveCheck)}`));
-        }
+        default:
+          absurd(command, `Unhandled command type: ${command}`);
       }
     }
   );
 
-  actionFuture.fork(
+  action.fork(
     (_) => process.exit(1),
     () => process.exit(0)
   );
diff --git a/package.json b/package.json
index e23573e..30eba3a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rafaeelricco/commit-tools",
-  "version": "0.2.5",
+  "version": "0.2.6",
   "type": "module",
   "bin": {
     "commit": "./dist/index.js"
diff --git a/src/cli/commit.ts b/src/cli/commit.ts
index 6cdbdca..9d09f88 100644
--- a/src/cli/commit.ts
+++ b/src/cli/commit.ts
@@ -47,9 +47,7 @@ class Commit {
       .chain(() => this.diff())
       .chain((diff) => this.generate(diff, this.config.commit_convention, this.config.custom_template).chain((message) => this.interact(diff, message)))
       .mapRej((e) => {
-        if (e instanceof Error) {
-          p.log.error(color.red(e.message));
-        }
+        p.log.error(color.red(e.message));
         return e;
       });
   }
diff --git a/src/cli/parser.ts b/src/cli/parser.ts
index 67f1fe8..a2e8e75 100644
--- a/src/cli/parser.ts
+++ b/src/cli/parser.ts
@@ -11,30 +11,33 @@ type CliCommand =
   | { type: "doctor" }
   | { type: "model" }
   | { type: "effort" }
+  | { type: "update" }
   | { type: "version" }
   | { type: "help" };
 
 const cliCommandDecoder: D.Decoder<CliCommand> = D.array(D.string).chain((args) => {
-  const cmd = args[0] || "generate";
+  const cmd = args[0] || "-h";
 
   switch (cmd) {
     case "generate":
-      return D.succeed({ type: "generate" as const });
+      return D.succeed({ type: "generate" });
     case "setup":
     case "login":
-      return D.succeed({ type: "setup" as const });
+      return D.succeed({ type: "setup" });
     case "doctor":
-      return D.succeed({ type: "doctor" as const });
+      return D.succeed({ type: "doctor" });
     case "model":
-      return D.succeed({ type: "model" as const });
+      return D.succeed({ type: "model" });
     case "effort":
-      return D.succeed({ type: "effort" as const });
+      return D.succeed({ type: "effort" });
+    case "update":
+      return D.succeed({ type: "update" });
     case "--version":
     case "-v":
-      return D.succeed({ type: "version" as const });
+      return D.succeed({ type: "version" });
     case "--help":
     case "-h":
-      return D.succeed({ type: "help" as const });
+      return D.succeed({ type: "help" });
     default:
       return D.fail(`Unknown command: ${cmd}`);
   }
@@ -53,14 +56,10 @@ Commands:
   doctor              Check installation and environment
   model               Select a different AI model
   effort              Adjust the reasoning effort for the current model
+  update              Install the latest version from npm
   --version, -v       Show version
   --help, -h          Show help
   `);
 };
 
-const showVersion = (): void => {
-  const start = performance.now();
-  console.log(`commit-tools ${packageVersion} (node)`);
-  const elapsed = performance.now() - start;
-  console.log(`Done in ${elapsed.toLocaleString()}ms`);
-};
+const showVersion = (): void => console.log(packageVersion);
diff --git a/src/cli/show-update-banner.ts b/src/cli/show-update-banner.ts
new file mode 100644
index 0000000..58aa190
--- /dev/null
+++ b/src/cli/show-update-banner.ts
@@ -0,0 +1,19 @@
+export { checkUpdate };
+
+import { checkForUpdate, compareVersions } from "@/infra/version-check";
+import { renderUpdateBanner } from "@/infra/ui/update-banner";
+import { version } from "@/package.json";
+
+const isOptedOut = (): boolean => process.env["NO_UPDATE_NOTIFIER"] === "true";
+const isCi = (): boolean => Boolean(process.env["CI"]);
+const isNonInteractive = (): boolean => !process.stdout.isTTY;
+
+const shouldSuppress = (): boolean => isOptedOut() || isCi() || isNonInteractive();
+
+const checkUpdate = (): void => {
+  if (shouldSuppress()) return;
+  const current = version;
+  checkForUpdate().maybe(undefined, (latest) => {
+    if (compareVersions(latest, current) > 0) renderUpdateBanner({ current, latest });
+  });
+};
diff --git a/src/cli/update.ts b/src/cli/update.ts
new file mode 100644
index 0000000..b513b8b
--- /dev/null
+++ b/src/cli/update.ts
@@ -0,0 +1,82 @@
+export { Update };
+
+import * as p from "@clack/prompts";
+import color from "picocolors";
+
+import { Future } from "@/libs/future";
+import { execBin, execBinInteractive } from "@/infra/shell";
+
+const PACKAGE_NAME = "@rafaeelricco/commit-tools";
+
+type PackageManager = { name: "pnpm" | "yarn" | "npm"; cmd: string; args: string[] };
+type ShellCommand = { cmd: string; args: string[] };
+
+const updateCommand = `${PACKAGE_NAME}@latest`;
+const pnpmPackageManager: PackageManager = { name: "pnpm", cmd: "pnpm", args: ["add", "-g", updateCommand] };
+const yarnPackageManager: PackageManager = { name: "yarn", cmd: "yarn", args: ["global", "add", updateCommand] };
+const npmPackageManager: PackageManager = { name: "npm", cmd: "npm", args: ["install", "-g", updateCommand] };
+
+const isYarnPath = (path: string): boolean => path.includes(".yarn") || path.includes("/yarn/") || path.includes("\\yarn\\");
+
+const yarnVersionCommand = (): ShellCommand =>
+  process.platform === "win32" ? { cmd: "cmd", args: ["/d", "/s", "/c", "yarn --version"] } : { cmd: "yarn", args: ["--version"] };
+
+const parseMajorVersion = (version: string): number | undefined => {
+  const major = version.trim().match(/^(\d+)\./)?.[1];
+  return major ? Number(major) : undefined;
+};
+
+const unsupportedYarnError = (): Error =>
+  new Error(
+    [
+      "Modern Yarn does not support global installs.",
+      `Install the latest commit-tools with ${color.cyan(`npm install -g ${updateCommand}`)} or ${color.cyan(`pnpm add -g ${updateCommand}`)}.`
+    ].join("\n")
+  );
+
+const resolveYarnPackageManager = (): Future<Error, PackageManager> => {
+  const versionCommand = yarnVersionCommand();
+  return execBin(versionCommand.cmd, versionCommand.args)
+    .chain((result) =>
+      result.either(
+        (): Future<Error, PackageManager> => Future.reject(unsupportedYarnError()),
+        ({ stdout }): Future<Error, PackageManager> => {
+          const major = parseMajorVersion(stdout);
+          return major === 1 ? Future.resolve(yarnPackageManager) : Future.reject(unsupportedYarnError());
+        }
+      )
+    )
+    .chainRej((): Future<Error, PackageManager> => Future.reject(unsupportedYarnError()));
+};
+
+const detectPackageManager = (binPath: string): Future<Error, PackageManager> => {
+  const path = binPath.toLowerCase();
+  if (path.includes("pnpm")) return Future.resolve(pnpmPackageManager);
+  if (isYarnPath(path)) return resolveYarnPackageManager();
+  return Future.resolve(npmPackageManager);
+};
+
+class Update {
+  private constructor() {}
+
+  static create(): Update {
+    return new Update();
+  }
+
+  run(): Future<Error, void> {
+    return detectPackageManager(process.argv[1] ?? "")
+      .chainRej((err): Future<Error, PackageManager> => {
+        p.note(err.message, "Yarn global installs unsupported");
+        return Future.reject(err);
+      })
+      .chain((pm): Future<Error, void> => {
+        p.note(`Running: ${color.cyan(`${pm.cmd} ${pm.args.join(" ")}`)}`, "Updating commit-tools");
+        return execBinInteractive(pm.cmd, pm.args)
+          .mapRej((err) => new Error(`Update failed: ${err.message}`))
+          .chainRej((err): Future<Error, void> => {
+            p.log.error(color.red(err.message));
+            return Future.reject(err);
+          });
+      });
+  }
+}
diff --git a/src/infra/shell.ts b/src/infra/shell.ts
index 012f305..c6c937d 100644
--- a/src/infra/shell.ts
+++ b/src/infra/shell.ts
@@ -1,4 +1,4 @@
-export { execBin, type CommandOutput, type CommandFailure, type ExecResult };
+export { execBin, execBinInteractive, type CommandOutput, type CommandFailure, type ExecResult };
 
 import { Future } from "@/libs/future";
 import { Failure, type Result, Success } from "@/libs/result";
@@ -8,13 +8,13 @@ type CommandOutput = Readonly<{ stdout: string; stderr: string }>;
 type CommandFailure = Readonly<{ output: CommandOutput; error: Error }>;
 type ExecResult = Result<CommandFailure, CommandOutput>;
 
+const exitCodeError = (exitCode: number | null, signal: NodeJS.Signals | null): Error =>
+  new Error(`Command failed with exit code ${exitCode}${signal ? ` and signal ${signal}` : ""}`);
+
 const commandResult = (output: CommandOutput, exitCode: number | null, signal: NodeJS.Signals | null): ExecResult =>
   exitCode === 0 ?
     Success<CommandFailure, CommandOutput>(output)
-  : Failure<CommandFailure, CommandOutput>({
-      output,
-      error: new Error(`Command failed with exit code ${exitCode}${signal ? ` and signal ${signal}` : ""}`)
-    });
+  : Failure<CommandFailure, CommandOutput>({ output, error: exitCodeError(exitCode, signal) });
 
 const execBin = (bin: string, args: string[]): Future<Error, ExecResult> =>
   Future.create<Error, ExecResult>((reject, resolve) => {
@@ -31,3 +31,13 @@ const execBin = (bin: string, args: string[]): Future<Error, ExecResult> =>
 
     return () => proc.kill();
   });
+
+const execBinInteractive = (bin: string, args: string[]): Future<Error, void> =>
+  Future.create<Error, void>((reject, resolve) => {
+    const proc = spawn(bin, args, { stdio: "inherit", shell: process.platform === "win32" });
+
+    proc.on("error", (err) => reject(new Error(`Failed to start process: ${err.message}`)));
+    proc.on("close", (exitCode, signal) => (exitCode === 0 ? resolve(undefined) : reject(exitCodeError(exitCode, signal))));
+
+    return () => proc.kill();
+  });
diff --git a/src/infra/ui/update-banner.ts b/src/infra/ui/update-banner.ts
new file mode 100644
index 0000000..5928845
--- /dev/null
+++ b/src/infra/ui/update-banner.ts
@@ -0,0 +1,16 @@
+export { renderUpdateBanner };
+
+import * as p from "@clack/prompts";
+import color from "picocolors";
+
+type UpdateInfo = { current: string; latest: string };
+
+const renderUpdateBanner = (info: UpdateInfo): void => {
+  const body = [
+    `${color.dim(info.current)} ${color.dim("→")} ${color.green(info.latest)}`,
+    ``,
+    `Run ${color.cyan("commit update")} to install the latest version.`,
+    color.dim(`Changelog: https://npm.im/@rafaeelricco/commit-tools`)
+  ].join("\n");
+  p.note(body, "Update available");
+};
diff --git a/src/infra/version-check.ts b/src/infra/version-check.ts
new file mode 100644
index 0000000..6c1834f
--- /dev/null
+++ b/src/infra/version-check.ts
@@ -0,0 +1,69 @@
+export { checkForUpdate, compareVersions };
+
+import { spawn } from "node:child_process";
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+import { CONFIG_DIR } from "@/infra/storage/config";
+import { Just, Nothing, type Maybe } from "@/libs/maybe";
+
+const CACHE_FILE = resolve(CONFIG_DIR, "version-check.json");
+const CHECK_INTERVAL_MS = 24 * 60 * 60 * 1000;
+const REGISTRY_URL = "https://registry.npmjs.org/@rafaeelricco/commit-tools/latest";
+
+type CachedCheck = { checkedAt: number; latestVersion: string };
+
+const loadCache = (): Maybe<CachedCheck> => {
+  try {
+    const raw = readFileSync(CACHE_FILE, "utf-8");
+    const parsed = JSON.parse(raw);
+    if (typeof parsed?.checkedAt === "number" && typeof parsed?.latestVersion === "string") {
+      return Just({ checkedAt: parsed.checkedAt, latestVersion: parsed.latestVersion });
+    }
+    return Nothing();
+  } catch {
+    return Nothing();
+  }
+};
+
+const compareVersions = (a: string, b: string): number => {
+  const parse = (v: string): number[] => (v.split("-")[0] ?? "").split(".").map((n) => parseInt(n, 10) || 0);
+  const pa = parse(a);
+  const pb = parse(b);
+  for (let i = 0; i < 3; i++) {
+    const da = pa[i] ?? 0;
+    const db = pb[i] ?? 0;
+    if (da > db) return 1;
+    if (da < db) return -1;
+  }
+  return 0;
+};
+
+const refreshCacheInBackground = (): void => {
+  const script = [
+    `fetch(${JSON.stringify(REGISTRY_URL)})`,
+    `.then(r => r.ok ? r.json() : Promise.reject())`,
+    `.then(j => { const fs = require("fs");`,
+    `fs.mkdirSync(${JSON.stringify(CONFIG_DIR)}, { recursive: true });`,
+    `fs.writeFileSync(${JSON.stringify(CACHE_FILE)},`,
+    `JSON.stringify({ checkedAt: Date.now(), latestVersion: j.version })); })`,
+    `.catch(() => {});`
+  ].join("");
+  try {
+    const child = spawn(process.execPath, ["-e", script], {
+      detached: true,
+      stdio: "ignore",
+      windowsHide: true
+    });
+    child.unref();
+    child.on("error", () => {});
+  } catch {
+    // best-effort; never let a refresh failure surface
+  }
+};
+
+const checkForUpdate = (): Maybe<string> => {
+  const cached = loadCache();
+  const isStale = cached.maybe(true, (c) => Date.now() - c.checkedAt > CHECK_INTERVAL_MS);
+  if (isStale) refreshCacheInBackground();
+  return cached.map((c) => c.latestVersion);
+};