diff --git a/CHANGELOG.md b/CHANGELOG.md
index ed5542825..5cc3ad333 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 2.11.4 - 2026-10-23
+
+- Preserve whole-valued floats and signed zero in CLI history-export JSON,
+  including nested memo projections. Untouched compact and pretty exports
+  retain their original canonical checksum and pass integrity verification.
+
 ## 2.11.3 - 2026-10-23
 
 - Refuse dependency injection that would silently discard recorded activity
diff --git a/composer.json b/composer.json
index 8c8420ea1..9b73cbf5f 100644
--- a/composer.json
+++ b/composer.json
@@ -87,7 +87,7 @@
             "dev-main": "2.0.x-dev"
         },
         "durable-workflow": {
-            "product-train": "2.11.3",
+            "product-train": "2.11.4",
             "laravel-embedded-upgrade-contract": "resources/laravel-embedded-upgrade-contract.json",
             "laravel-dependency-security-policy": "resources/laravel-dependency-security-policy.json"
         },
diff --git a/src/Commands/V2HistoryExportCommand.php b/src/Commands/V2HistoryExportCommand.php
index 30e1f5064..79a84faa3 100644
--- a/src/Commands/V2HistoryExportCommand.php
+++ b/src/Commands/V2HistoryExportCommand.php
@@ -85,7 +85,7 @@ public function handle(): int
      */
     private function encode(array $bundle): string
     {
-        $flags = JSON_UNESCAPED_SLASHES | JSON_THROW_ON_ERROR;
+        $flags = JSON_UNESCAPED_SLASHES | JSON_PRESERVE_ZERO_FRACTION | JSON_THROW_ON_ERROR;
 
         if ((bool) $this->option('pretty')) {
             $flags |= JSON_PRETTY_PRINT;
diff --git a/tests/Unit/Commands/V2HistoryExportNumericKindsTest.php b/tests/Unit/Commands/V2HistoryExportNumericKindsTest.php
new file mode 100644
index 000000000..fb84fb4ac
--- /dev/null
+++ b/tests/Unit/Commands/V2HistoryExportNumericKindsTest.php
@@ -0,0 +1,161 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\Commands;
+
+use Illuminate\Support\Facades\Queue;
+use Illuminate\Support\Str;
+use Orchestra\Testbench\TestCase;
+use PHPUnit\Framework\Attributes\DataProvider;
+use Workflow\Providers\WorkflowServiceProvider;
+use Workflow\V2\Activity;
+use Workflow\V2\Enums\TaskStatus;
+use Workflow\V2\Enums\TaskType;
+use Workflow\V2\Jobs\RunActivityTask;
+use Workflow\V2\Jobs\RunWorkflowTask;
+use Workflow\V2\Models\WorkflowTask;
+use Workflow\V2\StartOptions;
+use Workflow\V2\Support\BundleIntegrityVerifier;
+use Workflow\V2\Support\MemoPayload;
+use Workflow\V2\Workflow;
+use Workflow\V2\WorkflowStub;
+
+final class V2HistoryExportNumericKindsTest extends TestCase
+{
+    /**
+     * @return iterable<string, array{bool, bool}>
+     */
+    public static function exportModes(): iterable
+    {
+        yield 'waiting compact' => [false, false];
+        yield 'waiting pretty' => [false, true];
+        yield 'completed compact' => [true, false];
+        yield 'completed pretty' => [true, true];
+    }
+
+    #[DataProvider('exportModes')]
+    public function testSerializedExportsPreserveNumericKinds(bool $complete, bool $pretty): void
+    {
+        $this->artisan('migrate', [
+            '--force' => true,
+        ])->assertSuccessful();
+        Queue::fake();
+        $memo = [
+            'nested' => [
+                'list' => [3.0, -0.0, 1.5, 4],
+                'signed_zero' => -0.0,
+                'whole' => 2.0,
+            ],
+            'signed_zero' => -0.0,
+            'whole' => 1.0,
+        ];
+        $workflow = WorkflowStub::make(NumericExportWorkflow::class);
+        $workflow->start(new StartOptions(executionTimeoutSeconds: 30, runTimeoutSeconds: 30, memo: $memo));
+        $this->runReadyTask(TaskType::Workflow);
+
+        if ($complete) {
+            $this->runReadyTask(TaskType::Activity);
+            $this->runReadyTask(TaskType::Workflow);
+            $this->assertTrue($workflow->refresh()->completed());
+        } else {
+            $this->assertFalse($workflow->refresh()->run()->status->isTerminal());
+        }
+
+        $path = sys_get_temp_dir() . '/workflow-numeric-export-' . Str::ulid() . '.json';
+        $this->beforeApplicationDestroyed(static function () use ($path): void {
+            if (is_file($path)) {
+                unlink($path);
+            }
+        });
+        $this->artisan('workflow:v2:history-export', [
+            'target' => $workflow->runId(),
+            '--run' => true,
+            '--output' => $path,
+            '--pretty' => $pretty,
+        ])->assertSuccessful();
+
+        $raw = (string) file_get_contents($path);
+        $hash = hash('sha256', $raw);
+        $bundle = json_decode($raw, true, flags: JSON_THROW_ON_ERROR);
+        $projection = $bundle['workflow']['memo'];
+        $this->assertSame($memo, $projection);
+        $this->assertSame(-INF, fdiv(1.0, $projection['signed_zero']));
+        $this->assertSame(-INF, fdiv(1.0, $projection['nested']['signed_zero']));
+        $this->assertSame(-INF, fdiv(1.0, $projection['nested']['list'][1]));
+        $this->assertSame($memo, MemoPayload::decodeEntries($bundle['workflow']['memo_payload']));
+        $report = BundleIntegrityVerifier::verifyJson($raw);
+        $this->assertSame(
+            BundleIntegrityVerifier::STATUS_OK,
+            $report['status'],
+            json_encode($report, JSON_THROW_ON_ERROR),
+        );
+        $this->artisan('workflow:v2:replay-verify', [
+            'bundle' => $path,
+            '--skip-replay' => true,
+            '--json' => true,
+        ])->assertSuccessful();
+        $this->assertSame($hash, hash_file('sha256', $path));
+
+        // Historical lossy exports remain invalid. A reader must not coerce
+        // their projections or replace their recorded canonical checksum.
+        $lossy = json_encode($bundle, JSON_THROW_ON_ERROR);
+        $refusal = BundleIntegrityVerifier::verifyJson($lossy);
+        $this->assertSame(BundleIntegrityVerifier::STATUS_FAILED, $refusal['status']);
+        $rules = array_column($refusal['findings'], 'rule');
+        $this->assertContains('workflow.memo_projection_mismatch', $rules);
+        $this->assertContains('integrity.checksum_mismatch', $rules);
+    }
+
+    protected function getPackageProviders($app): array
+    {
+        return [WorkflowServiceProvider::class];
+    }
+
+    protected function defineEnvironment($app): void
+    {
+        $app['config']->set([
+            'database.default' => 'sqlite',
+            'database.connections.sqlite' => [
+                'driver' => 'sqlite',
+                'database' => ':memory:',
+                'prefix' => '',
+                'foreign_key_constraints' => true,
+            ],
+            'cache.default' => 'array',
+            'queue.default' => 'redis',
+            'workflows.v1.enabled' => false,
+            'workflows.serializer' => 'avro',
+            'workflows.v2.compatibility.current' => null,
+            'workflows.v2.execution_continuation.enabled' => false,
+        ]);
+    }
+
+    private function runReadyTask(TaskType $type): void
+    {
+        $task = WorkflowTask::query()->where('status', TaskStatus::Ready->value)
+            ->where('task_type', $type->value)
+            ->sole();
+        $job = $type === TaskType::Workflow ? new RunWorkflowTask($task->id) : new RunActivityTask($task->id);
+        $this->app->call([$job, 'handle']);
+    }
+}
+
+final class NumericExportWorkflow extends Workflow
+{
+    public function handle(): array
+    {
+        return \Workflow\V2\activity(NumericExportActivity::class);
+    }
+}
+
+final class NumericExportActivity extends Activity
+{
+    public function handle(): array
+    {
+        return [
+            1.0, -0.0, [
+                'whole' => 2.0,
+            ]];
+    }
+}