diff --git a/src/hatch/index/core.py b/src/hatch/index/core.py
index c5a231bae..226208bca 100644
--- a/src/hatch/index/core.py
+++ b/src/hatch/index/core.py
@@ -5,6 +5,8 @@
 
 import hyperlink
 
+from hatch._version import __version__
+
 if TYPE_CHECKING:
     import httpx
 
@@ -47,11 +49,19 @@ def __init__(self, repo: str, *, user='', auth='', ca_cert=None, client_cert=Non
 
     @cached_property
     def client(self) -> httpx.Client:
+        import platform
+
         import httpx
 
         from hatch.utils.network import DEFAULT_TIMEOUT
 
+        user_agent = (
+            f'Hatch/{__version__} '
+            f'{platform.python_implementation()}/{platform.python_version()} '
+            f'HTTPX/{httpx.__version__}'
+        )
         return httpx.Client(
+            headers={'User-Agent': user_agent},
             transport=httpx.HTTPTransport(retries=3, verify=self.__verify, cert=self.__cert),
             timeout=DEFAULT_TIMEOUT,
         )