diff --git a/cli/release_publish.php b/cli/release_publish.php
index 95a56fa..3facc88 100644
--- a/cli/release_publish.php
+++ b/cli/release_publish.php
@@ -254,6 +254,17 @@ class ReleasePublishCli extends CliFramework
         // -- Step 3: Build release package --
         echo "\n--- Step 3: Build and upload release ---\n";
         $releaseTag = $releaseTagMap[$stability];
+
+        // For non-Joomla platforms, use semver tags instead of stream tags
+        $platformOutput = [];
+        exec("{$php} {$cli}/manifest_read.php --path " . escapeshellarg($resolvedPath) . " --field platform 2>/dev/null", $platformOutput);
+        $platform = trim($platformOutput[0] ?? '');
+        if ($platform !== '' && !str_starts_with($platform, 'joomla')) {
+            $releaseTag = 'v' . $releaseVersion;
+            echo "  Platform: {$platform} — using semver tag: {$releaseTag}
+";
+        }
+
         $sha256 = '';
 
         if (!$this->dryRun) {