diff --git a/guardrails/cli/server/hub_client.py b/guardrails/cli/server/hub_client.py
index d29bf2781..9b343f929 100644
--- a/guardrails/cli/server/hub_client.py
+++ b/guardrails/cli/server/hub_client.py
@@ -1,4 +1,5 @@
 import sys
+from importlib.metadata import version
 from string import Template
 from typing import Any, Dict, Optional
 
@@ -18,6 +19,7 @@
 TOKEN_INVALID_MESSAGE = f"""Your token is invalid. Please run `guardrails configure`\
 to update your token.
 {FIND_NEW_TOKEN}"""
+GUARDRAILS_VERSION = version("guardrails-ai")
 
 validator_hub_service = "https://so4sg4q4pb.execute-api.us-east-1.amazonaws.com"
 validator_manifest_endpoint = Template(
@@ -49,6 +51,7 @@ def fetch(url: str, token: Optional[str], anonymousUserId: Optional[str]):
         headers = {
             "Authorization": f"Bearer {token}",
             "x-anonymous-user-id": anonymousUserId,
+            "x-guardrails-version": GUARDRAILS_VERSION,
         }
         req = requests.get(url, headers=headers)
         body = req.json()
diff --git a/pyproject.toml b/pyproject.toml
index a4bab62a7..933ff6f3d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "guardrails-ai"
-version = "0.5.0a10"
+version = "0.5.0a11"
 description = "Adding guardrails to large language models."
 authors = ["Guardrails AI <contact@guardrailsai.com>"]
 license = "Apache License 2.0"