diff --git a/src/Updater/Plugin/Command.php b/src/Updater/Plugin/Command.php
index 0283b6a0..8bb02e06 100644
--- a/src/Updater/Plugin/Command.php
+++ b/src/Updater/Plugin/Command.php
@@ -36,7 +36,7 @@ private function action()
             }
 
             try {
-                $this->updater->update(BaseApplication::getVersion(), $pharPath);
+                $this->updater->updateLatest(BaseApplication::getVersion(), $pharPath);
             } catch (NoUpdateAvailableException $e) {
                 echo sprintf('You are already running the latest version of workspace: %s', $e->getCurrentVersion()) . PHP_EOL;
                 exit(1);
diff --git a/src/Updater/Updater.php b/src/Updater/Updater.php
index 1531ce30..2aef7b4d 100644
--- a/src/Updater/Updater.php
+++ b/src/Updater/Updater.php
@@ -23,24 +23,28 @@ public function __construct(string $apiUrl, ?Output $output = null)
         $this->output = $output ?: new StdOutput();
     }
 
-    public function update(string $currentVersion, string $targetPath)
+    public function updateLatest(string $currentVersion, string $targetPath)
     {
-        if (empty($currentVersion)) {
-            throw new NoVersionDeterminedException();
-        }
-
         $latest = $this->getLatestRelease();
         if (!$latest->isMoreRecentThan($currentVersion)) {
             throw new NoUpdateAvailableException($currentVersion);
         }
+        $this->doUpdate($currentVersion, $latest, $targetPath);
+    }
+
+    private function doUpdate(string $currentVersion, Release $release, string $targetPath)
+    {
+        if (empty($currentVersion)) {
+            throw new NoVersionDeterminedException();
+        }
 
         $temp = tempnam(sys_get_temp_dir(), 'workspace-update-') . '.phar';
 
         try {
-            $this->output->infof('Downloading new version (%s) from %s', $latest->getVersion(), $latest->getUrl());
-            $releaseData = @file_get_contents($latest->getUrl());
+            $this->output->infof('Downloading new version (%s) from %s', $release->getVersion(), $release->getUrl());
+            $releaseData = @file_get_contents($release->getUrl());
             if ($releaseData === false) {
-                throw new \RuntimeException(sprintf('Unable to download latest release at %s', $latest->getUrl()), self::CODE_ERR_FETCHING_NEXT_RELEASE);
+                throw new \RuntimeException(sprintf('Unable to download latest release at %s', $release->getUrl()), self::CODE_ERR_FETCHING_NEXT_RELEASE);
             }
 
             $this->output->infof('Writing to %s', $temp);
@@ -67,18 +71,12 @@ public function update(string $currentVersion, string $targetPath)
     private function getLatestRelease(): Release
     {
         try {
-            $releases = file_get_contents($this->apiUrl, false, $this->createStreamContext());
+            $release = file_get_contents($this->apiUrl . '/latest', false, $this->createStreamContext());
         } catch (\Throwable $e) {
-            throw new \RuntimeException('Error fetching releases from GitHub.', self::CODE_ERR_FETCHING_RELEASES);
-        }
-
-        $releases = json_decode($releases);
-
-        if (count($releases) === 0) {
-            throw new \RuntimeException('No releases present in the GitHub API response.', self::CODE_NO_RELEASES);
+            throw new \RuntimeException('Error fetching latest release from GitHub.', self::CODE_ERR_FETCHING_RELEASES);
         }
 
-        $latest = $releases[0];
+        $latest = json_decode($release);
 
         return new Release($latest->assets[0]->browser_download_url, $latest->tag_name);
     }
diff --git a/tests/Test/Updater/UpdaterTest.php b/tests/Test/Updater/UpdaterTest.php
index ec9576c1..b85195cc 100644
--- a/tests/Test/Updater/UpdaterTest.php
+++ b/tests/Test/Updater/UpdaterTest.php
@@ -7,11 +7,24 @@
 use my127\Workspace\Updater\Updater;
 use PHPUnit\Framework\TestCase;
 
+use \RecursiveIteratorIterator;
+use \RecursiveDirectoryIterator;
+
 class UpdaterTest extends TestCase
 {
     public static function tearDownAfterClass(): void
     {
-        array_map('unlink', glob(__DIR__ . '/fixtures/generated/*.*'));
+        $files = new RecursiveIteratorIterator(
+            new RecursiveDirectoryIterator(__DIR__ . '/fixtures/generated', RecursiveDirectoryIterator::SKIP_DOTS),
+            RecursiveIteratorIterator::CHILD_FIRST
+        );
+        foreach ($files as $file) {
+            if ($file->isDir()) {
+                rmdir($file);
+            } else {
+                unlink($file);
+            }
+        }
     }
 
     public static function setUpBeforeClass(): void
@@ -28,76 +41,70 @@ public function exceptionThrownWhenErrorFetchingReleases()
         $this->expectExceptionCode(Updater::CODE_ERR_FETCHING_RELEASES);
 
         $updater = new Updater(__DIR__ . '/fixtures/foo.json', new NullOutput());
-        $updater->update('1.0.0', '');
-    }
-
-    /** @test */
-    public function exceptionThrownWhenThereAreNoReleases()
-    {
-        $this->expectException(\RuntimeException::class);
-        $this->expectExceptionCode(Updater::CODE_NO_RELEASES);
-
-        $updater = new Updater(__DIR__ . '/fixtures/empty-releases.json');
-        $updater->update('1.0.0', '');
+        $updater->updateLatest('1.0.0', '');
     }
 
     /** @test */
     public function exceptionThrownWhenAlreadyOnLatest()
     {
-        $this->prepareReleasesFixture('latest.json', '', '1.0.0');
+        $this->prepareLatestFixture('valid/latest', '', '1.0.0');
         $this->expectException(NoUpdateAvailableException::class);
 
-        $updater = new Updater(__DIR__ . '/fixtures/generated/latest.json', new NullOutput());
-        $updater->update('1.0.0', '');
+        $updater = new Updater(__DIR__ . '/fixtures/generated/valid', new NullOutput());
+        $updater->updateLatest('1.0.0', '');
     }
 
     /** @test */
     public function exceptionThrownWhenCurrentVersionIsEmpty()
     {
-        $this->prepareReleasesFixture('latest.json', '', '1.0.0');
+        $this->prepareLatestFixture('valid/latest', '', '1.0.0');
         $this->expectException(NoVersionDeterminedException::class);
 
-        $updater = new Updater(__DIR__ . '/fixtures/generated/latest.json', new NullOutput());
-        $updater->update('', '');
+        $updater = new Updater(__DIR__ . '/fixtures/generated/valid', new NullOutput());
+        $updater->updateLatest('', '');
     }
 
     /** @test */
     public function exceptionThrownWhenOnMoreRecentVersion()
     {
-        $this->prepareReleasesFixture('older.json', '', '1.0.0');
+        $this->prepareLatestFixture('older/latest', '', '1.0.0');
         $this->expectException(NoUpdateAvailableException::class);
 
-        $updater = new Updater(__DIR__ . '/fixtures/generated/older.json', new NullOutput());
-        $updater->update('1.1.0', '');
+        $updater = new Updater(__DIR__ . '/fixtures/generated/older', new NullOutput());
+        $updater->updateLatest('1.1.0', '');
     }
 
     /** @test */
     public function exceptionThrownWhenNextReleaseCannotBeDownloaded()
     {
-        $this->prepareReleasesFixture('invalid-release.json', __DIR__ . '/foo.baz.bar', '1.0.0');
+        $this->prepareLatestFixture('invalid-release/latest', __DIR__ . '/foo.baz.bar', '1.0.0');
         $this->expectException(\RuntimeException::class);
         $this->expectExceptionCode(Updater::CODE_ERR_FETCHING_NEXT_RELEASE);
 
-        $updater = new Updater(__DIR__ . '/fixtures/generated/invalid-release.json', new NullOutput());
-        $updater->update('0.9.0', '');
+        $updater = new Updater(__DIR__ . '/fixtures/generated/invalid-release', new NullOutput());
+        $updater->updateLatest('0.9.0', '');
     }
 
     /** @test */
     public function downloadsLatestReleaseToDesiredTargetPath()
     {
         $this->prepareFakePhar();
-        $this->prepareReleasesFixture('valid.json', __DIR__ . '/fixtures/generated/fake.phar', '1.0.0');
+        $this->prepareLatestFixture('valid/latest', __DIR__ . '/fixtures/generated/fake.phar', '1.0.0');
 
         $temp = sys_get_temp_dir() . '/test-ws-download';
-        $updater = new Updater(__DIR__ . '/fixtures/generated/valid.json', new NullOutput());
-        $updater->update('0.9.0', $temp);
+        $updater = new Updater(__DIR__ . '/fixtures/generated/valid', new NullOutput());
+        $updater->updateLatest('0.9.0', $temp);
 
         $this->assertFileExists($temp);
     }
 
-    private function prepareReleasesFixture(string $name, string $releasePath, string $version): void
+    private function prepareLatestFixture(string $name, string $releasePath, string $version): void
     {
-        $contents = file_get_contents(__DIR__ . '/fixtures/tpl/releases.json');
+        $dir = dirname(__DIR__ . '/fixtures/generated/' . $name);
+        if (!file_exists($dir)) {
+            mkdir($dir);
+        }
+        $contents = file_get_contents(__DIR__ . '/fixtures/tpl/latest.json');
         $contents = str_replace(['%%browserDownloadUrl%%', '%%versionTag%%'], [$releasePath, $version], $contents);
 
         file_put_contents(__DIR__ . '/fixtures/generated/' . $name, $contents);
diff --git a/tests/Test/Updater/fixtures/tpl/latest.json b/tests/Test/Updater/fixtures/tpl/latest.json
new file mode 100644
index 00000000..748d5aa7
--- /dev/null
+++ b/tests/Test/Updater/fixtures/tpl/latest.json
@@ -0,0 +1,74 @@
+{
+    "url": "https://api.github.com/repos/my127/workspace/releases/43190729",
+    "assets_url": "https://api.github.com/repos/my127/workspace/releases/43190729/assets",
+    "upload_url": "https://uploads.github.com/repos/my127/workspace/releases/43190729/assets{?name,label}",
+    "html_url": "https://github.com/my127/workspace/releases/tag/%%versionTag%%",
+    "id": 43190729,
+    "author": {
+      "login": "joe",
+      "id": 9999,
+      "node_id": "MDQ6VXNlcjE1NTQ3MDk=",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1554709?v=4",
+      "gravatar_id": "",
+      "url": "https://api.github.com/users/joe",
+      "html_url": "https://github.com/joe",
+      "followers_url": "https://api.github.com/users/joe/followers",
+      "following_url": "https://api.github.com/users/joe/following{/other_user}",
+      "gists_url": "https://api.github.com/users/joe/gists{/gist_id}",
+      "starred_url": "https://api.github.com/users/joe/starred{/owner}{/repo}",
+      "subscriptions_url": "https://api.github.com/users/joe/subscriptions",
+      "organizations_url": "https://api.github.com/users/joe/orgs",
+      "repos_url": "https://api.github.com/users/joe/repos",
+      "events_url": "https://api.github.com/users/joe/events{/privacy}",
+      "received_events_url": "https://api.github.com/users/joe/received_events",
+      "type": "User",
+      "site_admin": false
+    },
+    "node_id": "MDc6UmVsZWFzZTQzMTkwNzI5",
+    "tag_name": "%%versionTag%%",
+    "target_commitish": "1.x",
+    "name": "%%versionTag%%",
+    "draft": false,
+    "prerelease": true,
+    "created_at": "2021-05-19T06:18:24Z",
+    "published_at": "2021-05-19T06:24:32Z",
+    "assets": [
+      {
+        "url": "https://api.github.com/repos/my127/workspace/releases/assets/37159196",
+        "id": 37159196,
+        "node_id": "MDEyOlJlbGVhc2VBc3NldDM3MTU5MTk2",
+        "name": "ws",
+        "label": null,
+        "uploader": {
+          "login": "joe",
+          "id": 1554709,
+          "node_id": "MDQ6VXNlcjE1NTQ3MDk=",
+          "avatar_url": "https://avatars.githubusercontent.com/u/1554709?v=4",
+          "gravatar_id": "",
+          "url": "https://api.github.com/users/joe",
+          "html_url": "https://github.com/joe",
+          "followers_url": "https://api.github.com/users/joe/followers",
+          "following_url": "https://api.github.com/users/joe/following{/other_user}",
+          "gists_url": "https://api.github.com/users/joe/gists{/gist_id}",
+          "starred_url": "https://api.github.com/users/joe/starred{/owner}{/repo}",
+          "subscriptions_url": "https://api.github.com/users/joe/subscriptions",
+          "organizations_url": "https://api.github.com/users/joe/orgs",
+          "repos_url": "https://api.github.com/users/joe/repos",
+          "events_url": "https://api.github.com/users/joe/events{/privacy}",
+          "received_events_url": "https://api.github.com/users/joe/received_events",
+          "type": "User",
+          "site_admin": false
+        },
+        "content_type": "application/octet-stream",
+        "state": "uploaded",
+        "size": 2944641,
+        "download_count": 20,
+        "created_at": "2021-05-19T06:22:50Z",
+        "updated_at": "2021-05-19T06:22:54Z",
+        "browser_download_url": "%%browserDownloadUrl%%"
+      }
+    ],
+    "tarball_url": "https://api.github.com/repos/my127/workspace/tarball/%%versionTag%%",
+    "zipball_url": "https://api.github.com/repos/my127/workspace/zipball/%%versionTag%%",
+    "body": "## [%%versionTag%%](https://github.com/my127/workspace/tree/%%versionTag%%) (2021-05-19)\r\n\r\n[Full Changelog](https://github.com/my127/workspace/compare/0.1.3...%%versionTag1%%)\r\n\r\n**Implemented enhancements:**\r\n\r\n- Add a cheatsheet [\\#83](https://github.com/my127/workspace/pull/83) ([rgpjones](https://github.com/rgpjones))\r\n- Add poweroff command [\\#82](https://github.com/my127/workspace/pull/82) ([joe](https://github.com/joe))\r\n- Add before/after overlay events and match with before for prepare [\\#78](https://github.com/my127/workspace/pull/78) ([andytson-inviqa](https://github.com/andytson-inviqa))\r\n- Improve integration test suite [\\#77](https://github.com/my127/workspace/pull/77) ([dantleech](https://github.com/dantleech))\r\n- Add PHP 8 support [\\#68](https://github.com/my127/workspace/pull/68) ([elvetemedve](https://github.com/elvetemedve))\r\n- Add config dump command [\\#67](https://github.com/my127/workspace/pull/67) ([hgajjar](https://github.com/hgajjar))\r\n- Add Jaeger daemon [\\#66](https://github.com/my127/workspace/pull/66) ([joe](https://github.com/joe))\r\n- Add more default symfony expression functions [\\#56](https://github.com/my127/workspace/pull/56) ([andytson-inviqa](https://github.com/andytson-inviqa))\r\n- Update symfony components and twig to latest minor version [\\#55](https://github.com/my127/workspace/pull/55) ([andytson-inviqa](https://github.com/andytson-inviqa))\r\n- Upgrade to mailhog image v1.0.1 [\\#54](https://github.com/my127/workspace/pull/54) ([joe](https://github.com/joe))\r\n- Fix multiple argument run/passthru escaping [\\#53](https://github.com/my127/workspace/pull/53) ([andytson-inviqa](https://github.com/andytson-inviqa))\r\n- Make commands and function errors debuggable by saying what name they are [\\#51](https://github.com/my127/workspace/pull/51) ([andytson-inviqa](https://github.com/andytson-inviqa))\r\n- Add missing Bash interpreter page [\\#49](https://github.com/my127/workspace/pull/49) ([opdavies](https://github.com/opdavies))\r\n- Misc: license as MIT [\\#47](https://github.com/my127/workspace/pull/47) ([dcole-inviqa](https://github.com/dcole-inviqa))\r\n- Note that curl is required [\\#46](https://github.com/my127/workspace/pull/46) ([joe](https://github.com/joe))\r\n- Add an after\\('harness.prepare'\\) event [\\#44](https://github.com/my127/workspace/pull/44) ([andytson-inviqa](https://github.com/andytson-inviqa))\r\n- Test on PHP 7.4 [\\#40](https://github.com/my127/workspace/pull/40) ([joe](https://github.com/joe))\r\n\r\n**Fixed bugs:**\r\n\r\n- Add requirement to use prefix space to avoid secrets in shell history [\\#65](https://github.com/my127/workspace/pull/65) ([andytson-inviqa](https://github.com/andytson-inviqa))\r\n- Handle sidekick errexiting correctly [\\#58](https://github.com/my127/workspace/pull/58) ([andytson-inviqa](https://github.com/andytson-inviqa))\r\n\r\n**Closed issues:**\r\n\r\n- Service commands provide no feedback if command not found [\\#62](https://github.com/my127/workspace/issues/62)\r\n- Support for self-update? [\\#60](https://github.com/my127/workspace/issues/60)\r\n- Executing a ws command that does not exist should return a non-zero exit code [\\#45](https://github.com/my127/workspace/issues/45)\r\n- Support for multiple harnesses to one workspace [\\#23](https://github.com/my127/workspace/issues/23)\r\n\r\n## Installation instructions\r\n```bash\r\ncurl --output ./ws --location https://github.com/my127/workspace/releases/download/%%versionTag1%%/ws\r\nchmod +x ws && sudo mv ws /usr/local/bin/ws\r\n```"
+}