diff --git a/pycvesearch/core.py b/pycvesearch/core.py
index b728f12..4411fc6 100644
--- a/pycvesearch/core.py
+++ b/pycvesearch/core.py
@@ -1,8 +1,7 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-import pkg_resources
-
+from importlib.metadata import version
 from typing import Optional, Dict, MutableMapping
 from urllib.parse import urljoin
 
@@ -18,7 +17,7 @@ def __init__(self, base_url: str, proxies: MutableMapping[str, str]={}, timeout:
         self.session.proxies = proxies
         self.session.headers.update({
             'content-type': 'application/json',
-            'User-Agent': useragent if useragent else f'PyCVESearch / {pkg_resources.get_distribution("pycvesearch").version}'})
+            'User-Agent': useragent if useragent else f'PyCVESearch / {version("pycvesearch")}'})
         self.timeout = timeout
         self.verify = verify