diff --git a/pyiceberg/catalog/rest/__init__.py b/pyiceberg/catalog/rest/__init__.py
index c43a64f3cc..afbaa7db07 100644
--- a/pyiceberg/catalog/rest/__init__.py
+++ b/pyiceberg/catalog/rest/__init__.py
@@ -80,8 +80,6 @@
 if TYPE_CHECKING:
     import pyarrow as pa
 
-ICEBERG_REST_SPEC_VERSION = "0.14.1"
-
 
 class Endpoints:
     get_config: str = "config"
@@ -485,7 +483,6 @@ def _config_headers(self, session: Session) -> None:
         header_properties = get_header_properties(self.properties)
         session.headers.update(header_properties)
         session.headers["Content-type"] = "application/json"
-        session.headers["X-Client-Version"] = ICEBERG_REST_SPEC_VERSION
         session.headers["User-Agent"] = f"PyIceberg/{__version__}"
         session.headers.setdefault("X-Iceberg-Access-Delegation", ACCESS_DELEGATION_DEFAULT)
 
diff --git a/tests/catalog/test_rest.py b/tests/catalog/test_rest.py
index dcabd0a2ea..ef3645c751 100644
--- a/tests/catalog/test_rest.py
+++ b/tests/catalog/test_rest.py
@@ -58,7 +58,6 @@
 
 TEST_HEADERS = {
     "Content-type": "application/json",
-    "X-Client-Version": "0.14.1",
     "User-Agent": f"PyIceberg/{pyiceberg.__version__}",
     "Authorization": f"Bearer {TEST_TOKEN}",
     "X-Iceberg-Access-Delegation": "vended-credentials",