diff --git a/src/PackageVersions/Installer.php b/src/PackageVersions/Installer.php
index 579042d..b64a5f9 100644
--- a/src/PackageVersions/Installer.php
+++ b/src/PackageVersions/Installer.php
@@ -124,7 +124,7 @@ private static function writeVersionClassToFile(string $versionClassSource, Comp
         $io->write('<info>ocramius/package-versions:</info>  Generating version class...');
 
         file_put_contents($installPath, $versionClassSource);
-        chmod($installPath, 0664);
+        @chmod($installPath, 0664);
 
         $io->write('<info>ocramius/package-versions:</info> ...done generating version class');
     }