diff --git a/src/Traits/CopiesToBuildDirectory.php b/src/Traits/CopiesToBuildDirectory.php
index f962793..b01228f 100644
--- a/src/Traits/CopiesToBuildDirectory.php
+++ b/src/Traits/CopiesToBuildDirectory.php
@@ -106,6 +106,14 @@ public function copyToBuildDirectory()
             } catch (Throwable $e) {
                 warning('[WARNING] '.$e->getMessage());
             }
+
+            $perms = fileperms($item->getPathname());
+
+            if ($perms === false) {
+                continue;
+            }
+
+            chmod($target, $perms);
         }
 
         $this->keepRequiredDirectories();
diff --git a/tests/Unit/CopyToBuildDirectoryTest.php b/tests/Unit/CopyToBuildDirectoryTest.php
index c7d1789..c33e021 100644
--- a/tests/Unit/CopyToBuildDirectoryTest.php
+++ b/tests/Unit/CopyToBuildDirectoryTest.php
@@ -206,3 +206,15 @@ protected function buildPath(string $path = ''): string
 
     expect($required)->each->toBeFile();
 });
+
+it('preserves file permissions', function () use ($sourcePath, $buildPath, $command) {
+    createFiles("$sourcePath/file-under-test.txt");
+
+    chmod("$sourcePath/file-under-test.txt", octdec('0775'));
+
+    $originalPermissions = fileperms("$sourcePath/file-under-test.txt");
+
+    $command->copyToBuildDirectory();
+
+    expect(fileperms("$buildPath/file-under-test.txt"))->toBe($originalPermissions);
+});