diff --git a/src/cli.test.ts b/src/cli.test.ts
new file mode 100644
index 0000000..e87760f
--- /dev/null
+++ b/src/cli.test.ts
@@ -0,0 +1,49 @@
+import { afterEach, expect, test } from "bun:test";
+import { mkdtempSync, rmSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+
+const homes: string[] = [];
+const cli = join(import.meta.dir, "cli.ts");
+
+afterEach(() => {
+  for (const home of homes.splice(0)) {
+    rmSync(home, { recursive: true, force: true });
+  }
+});
+
+function createHome(): string {
+  const home = mkdtempSync(join(tmpdir(), "mem-cli-test-"));
+  homes.push(home);
+  return home;
+}
+
+function runCli(home: string, args: string[], stdin?: string) {
+  return Bun.spawnSync({
+    cmd: [process.execPath, cli, ...args],
+    env: { ...process.env, HOME: home },
+    stdin: stdin === undefined ? undefined : new TextEncoder().encode(stdin),
+    stdout: "pipe",
+    stderr: "pipe",
+  });
+}
+
+test("forget reads multiple memory IDs from stdin", () => {
+  const home = createHome();
+  const first = runCli(home, ["+", "alpha memory"]);
+  const second = runCli(home, ["+", "beta memory"]);
+
+  expect(first.exitCode).toBe(0);
+  expect(second.exitCode).toBe(0);
+
+  const firstId = first.stdout.toString().trim();
+  const secondId = second.stdout.toString().trim();
+  const forgotten = runCli(home, ["-"], `${firstId}\n${secondId}\n`);
+
+  expect(forgotten.exitCode).toBe(0);
+  expect(forgotten.stdout.toString().trim()).toBe("deleted 2");
+
+  const remaining = runCli(home, ["--json"]);
+  expect(remaining.exitCode).toBe(0);
+  expect(remaining.stdout.toString().trim()).toBe("No memories.");
+});
diff --git a/src/cli.ts b/src/cli.ts
index 2cec96b..5e360c4 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -225,13 +225,13 @@ function recall(args: ParsedArgs): void {
   db.close();
 }
 
-function forget(args: ParsedArgs): void {
+async function forget(args: ParsedArgs): Promise<void> {
   // Support reading IDs from stdin for bulk delete
   const ids = args.positionals;
 
   if (ids.length === 0 && !process.stdin.isTTY) {
     // Read IDs from stdin (one per line)
-    const input = Buffer.from(Bun.stdin.stream() as any).toString("utf-8").trim();
+    const input = await readStdin();
     if (input) ids.push(...input.split("\n").map((s) => s.trim()).filter(Boolean));
   }