diff --git a/src/Methods/CopyMethod.php b/src/Methods/CopyMethod.php
index c38d05a..ce6e510 100644
--- a/src/Methods/CopyMethod.php
+++ b/src/Methods/CopyMethod.php
@@ -6,6 +6,7 @@
 use RecursiveDirectoryIterator;
 use RecursiveIteratorIterator;
 use RuntimeException;
+use SilverStripe\Dev\Deprecation;
 
 /**
  * Expose the vendor module resources via a file copy
@@ -30,7 +31,7 @@ public function exposeDirectory($source, $target)
         $this->filesystem->removeDirectory($target);
 
         // Copy to destination
-        if (!$this->copy($source, $target)) {
+        if (!$this->filesystem->copy($source, $target)) {
             throw new RuntimeException("Could not write to directory $target");
         }
     }
@@ -38,14 +39,16 @@ public function exposeDirectory($source, $target)
     /**
      * Copies a file or directory from $source to $target.
      *
-     * @todo Replace with `$this->filesystem->copy() once composer 1.6.0 is released
      *
      * @param string $source
      * @param string $target
+     * @deprecated 5.2 Use Filesystem::copy instead
      * @return bool
      */
     public function copy($source, $target)
     {
+        Deprecation::notice('5.2', 'Use Filesystem::copy instead', Deprecation::SCOPE_METHOD);
+
         if (!is_dir($source ?? '')) {
             return copy($source ?? '', $target ?? '');
         }