diff --git a/nautilus_trader/__init__.py b/nautilus_trader/__init__.py
index 5f75908b251b..f99514935db7 100644
--- a/nautilus_trader/__init__.py
+++ b/nautilus_trader/__init__.py
@@ -26,6 +26,13 @@
 PACKAGE_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 PYPROJECT_PATH = os.path.join(PACKAGE_ROOT, "pyproject.toml")
 
+try:
+    __version__ = toml.load(PYPROJECT_PATH)["tool"]["poetry"]["version"]
+except FileNotFoundError:  # pragma: no cover
+    __version__ = "latest"
+
+USER_AGENT = f"NautilusTrader/{__version__}"
+
 
 def clean_version_string(version: str) -> str:
     """
@@ -61,9 +68,3 @@ def get_package_version_installed(package_name: str) -> str:
     Return the package version installed for the given `package_name`.
     """
     return version(package_name)
-
-
-try:
-    __version__ = toml.load(PYPROJECT_PATH)["tool"]["poetry"]["version"]
-except FileNotFoundError:  # pragma: no cover
-    __version__ = "latest"
diff --git a/nautilus_trader/adapters/betfair/client.py b/nautilus_trader/adapters/betfair/client.py
index 474809c7d8d4..4448c8340518 100644
--- a/nautilus_trader/adapters/betfair/client.py
+++ b/nautilus_trader/adapters/betfair/client.py
@@ -13,7 +13,6 @@
 #  limitations under the License.
 # -------------------------------------------------------------------------------------------------
 
-
 from betfair_parser.endpoints import ENDPOINTS
 from betfair_parser.spec.accounts.operations import GetAccountDetails
 from betfair_parser.spec.accounts.operations import GetAccountFunds
@@ -58,6 +57,7 @@
 from betfair_parser.spec.navigation import Menu
 from betfair_parser.spec.navigation import Navigation
 
+import nautilus_trader
 from nautilus_trader.common.logging import Logger
 from nautilus_trader.common.logging import LoggerAdapter
 from nautilus_trader.core.nautilus_pyo3 import HttpClient
@@ -128,6 +128,7 @@ def reset_headers(self):
         self._headers = {
             "Accept": "application/json",
             "Content-Type": "application/x-www-form-urlencoded",
+            "User-Agent": nautilus_trader.USER_AGENT,
             "X-Application": self.app_key,
         }
 
diff --git a/nautilus_trader/adapters/betfair/config.py b/nautilus_trader/adapters/betfair/config.py
index de1631f90e28..3c1e760220f1 100644
--- a/nautilus_trader/adapters/betfair/config.py
+++ b/nautilus_trader/adapters/betfair/config.py
@@ -13,7 +13,6 @@
 #  limitations under the License.
 # -------------------------------------------------------------------------------------------------
 
-
 from nautilus_trader.adapters.betfair.providers import BetfairInstrumentProviderConfig
 from nautilus_trader.config import LiveDataClientConfig
 from nautilus_trader.config import LiveExecClientConfig
diff --git a/nautilus_trader/adapters/binance/http/client.py b/nautilus_trader/adapters/binance/http/client.py
index 2b3700e23c92..983fe8d872af 100644
--- a/nautilus_trader/adapters/binance/http/client.py
+++ b/nautilus_trader/adapters/binance/http/client.py
@@ -73,7 +73,7 @@ def __init__(
         self._secret: str = secret
         self._headers: dict[str, Any] = {
             "Content-Type": "application/json",
-            "User-Agent": "nautilus-trader/" + nautilus_trader.__version__,
+            "User-Agent": nautilus_trader.USER_AGENT,
             "X-MBX-APIKEY": key,
         }
         self._client = HttpClient(
diff --git a/nautilus_trader/adapters/bybit/http/client.py b/nautilus_trader/adapters/bybit/http/client.py
index 9b4f5d7dc6a1..d4d61ad2fee4 100644
--- a/nautilus_trader/adapters/bybit/http/client.py
+++ b/nautilus_trader/adapters/bybit/http/client.py
@@ -68,7 +68,7 @@ def __init__(
         self._base_url: str = base_url
         self._headers: dict[str, Any] = {
             "Content-Type": "application/json",
-            "User-Agent": "nautilus-trader/" + nautilus_trader.__version__,
+            "User-Agent": nautilus_trader.USER_AGENT,
             "X-BAPI-API-KEY": self._api_key,
         }
         self._client = HttpClient(
diff --git a/nautilus_trader/adapters/databento/common.py b/nautilus_trader/adapters/databento/common.py
index 1d66966fc57e..9c0e20863e7c 100644
--- a/nautilus_trader/adapters/databento/common.py
+++ b/nautilus_trader/adapters/databento/common.py
@@ -17,6 +17,7 @@
 
 import databento
 
+import nautilus_trader
 from nautilus_trader.adapters.databento.types import DatabentoPublisher
 from nautilus_trader.core.correctness import PyCondition
 from nautilus_trader.model.data import BarType
@@ -27,6 +28,11 @@
 from nautilus_trader.model.identifiers import Venue
 
 
+# Update Databento user-agent constant value with NautilusTrader version
+if nautilus_trader.USER_AGENT not in databento.common.system.USER_AGENT:
+    databento.common.system.USER_AGENT += f" {nautilus_trader.USER_AGENT}"
+
+
 def check_file_path(path: Path) -> None:
     """
     Check that the file at the given `path` exists and is not empty.