Update Haystack version in README.md

README.md

@@ -19,6 +19,6 @@ pinned: false
     </p>
     <p>For more info on Haystack, visit our <strong><a href="https://github.com/deepset-ai/haystack">GitHub</a></strong> repo and <strong><a href="https://docs.haystack.deepset.ai">Documentation</a></strong>. You can also <strong><a class="h-7" href="https://haystack.deepset.ai/community">join us on Discord</a></strong>
     </p>
-    <p align="center"><strong>✨<a href="https://pypi.org/project/farm-haystack/">Haystack is on v1.14.0</a>✨</strong></p>
+    <p align="center"><strong>✨<a href="https://pypi.org/project/farm-haystack/">Haystack is on v1.15.1</a>✨</strong></p>
    </div>
 </div>