diff --git a/index.php b/index.php
index 84cb41e8..429358dc 100644
--- a/index.php
+++ b/index.php
@@ -751,6 +751,13 @@ public function extractDownload(): void {
 		$this->silentLog('[info] extractDownload()');
 		$downloadedFilePath = $this->getDownloadedFilePath();
 
+		if (!extension_loaded('zip')) {
+			throw new \Exception('Required PHP extension missing: zip');
+		}
+
+		$libzip_version = defined("ZipArchive::LIBZIP_VERSION") ? \ZipArchive::LIBZIP_VERSION : "Unknown (but old)";
+		$this->silentLog('[info] Libzip version detected: ' . $libzip_version);
+
 		$zip = new \ZipArchive;
 		$zipState = $zip->open($downloadedFilePath);
 		if ($zipState === true) {
diff --git a/lib/Updater.php b/lib/Updater.php
index 9ee2d5ce..a7e61722 100644
--- a/lib/Updater.php
+++ b/lib/Updater.php
@@ -713,6 +713,13 @@ public function extractDownload(): void {
 		$this->silentLog('[info] extractDownload()');
 		$downloadedFilePath = $this->getDownloadedFilePath();
 
+		if (!extension_loaded('zip')) {
+			throw new \Exception('Required PHP extension missing: zip');
+		}
+
+		$libzip_version = defined("ZipArchive::LIBZIP_VERSION") ? \ZipArchive::LIBZIP_VERSION : "Unknown (but old)";
+		$this->silentLog('[info] Libzip version detected: ' . $libzip_version);
+
 		$zip = new \ZipArchive;
 		$zipState = $zip->open($downloadedFilePath);
 		if ($zipState === true) {
diff --git a/updater.phar b/updater.phar
index 50e18c98..919ebdb4 100755
Binary files a/updater.phar and b/updater.phar differ