diff --git a/pyproject.toml b/pyproject.toml
index 326970586..b401d21e1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "uipath"
-version = "2.6.27"
+version = "2.6.28"
 description = "Python SDK and CLI for UiPath Platform, enabling programmatic interaction with automation services, process management, and deployment tools."
 readme = { file = "README.md", content-type = "text/markdown" }
 requires-python = ">=3.11"
diff --git a/src/uipath/tracing/_utils.py b/src/uipath/tracing/_utils.py
index 3df356d05..d051d6752 100644
--- a/src/uipath/tracing/_utils.py
+++ b/src/uipath/tracing/_utils.py
@@ -15,6 +15,9 @@
 
 logger = logging.getLogger(__name__)
 
+# SourceEnum.Robots = 4 (default for Python SDK / coded agents)
+DEFAULT_SOURCE = 4
+
 
 @dataclass
 class UiPathSpan:
@@ -43,7 +46,7 @@ class UiPathSpan:
     folder_key: Optional[str] = field(
         default_factory=lambda: env.get("UIPATH_FOLDER_KEY", "")
     )
-    source: Optional[int] = None
+    source: int = DEFAULT_SOURCE
     span_type: str = "Coded Agents"
     process_key: Optional[str] = field(
         default_factory=lambda: env.get("UIPATH_PROCESS_UUID")
@@ -248,7 +251,10 @@ def otel_span_to_uipath_span(
         execution_type = attributes_dict.get("executionType")
         agent_version = attributes_dict.get("agentVersion")
         reference_id = attributes_dict.get("referenceId")
-        source = attributes_dict.get("source")
+
+        # Source: override via uipath.source attribute, else DEFAULT_SOURCE
+        uipath_source = attributes_dict.get("uipath.source")
+        source = uipath_source if isinstance(uipath_source, int) else DEFAULT_SOURCE
 
         # Create UiPathSpan from OpenTelemetry span
         start_time = datetime.fromtimestamp(
diff --git a/tests/tracing/test_span_utils.py b/tests/tracing/test_span_utils.py
index 0da577bca..54a5e4948 100644
--- a/tests/tracing/test_span_utils.py
+++ b/tests/tracing/test_span_utils.py
@@ -320,3 +320,69 @@ def test_uipath_span_missing_execution_type_and_agent_version(self):
 
         assert span_dict["ExecutionType"] is None
         assert span_dict["AgentVersion"] is None
+
+    @patch.dict(os.environ, {"UIPATH_ORGANIZATION_ID": "test-org"})
+    def test_uipath_span_source_defaults_to_robots(self):
+        """Test that Source defaults to 4 (Robots) and ignores attributes.source."""
+        mock_span = Mock(spec=OTelSpan)
+
+        trace_id = 0x123456789ABCDEF0123456789ABCDEF0
+        span_id = 0x0123456789ABCDEF
+        mock_context = SpanContext(trace_id=trace_id, span_id=span_id, is_remote=False)
+        mock_span.get_span_context.return_value = mock_context
+
+        mock_span.name = "test-span"
+        mock_span.parent = None
+        mock_span.status.status_code = StatusCode.OK
+        # source in attributes should NOT override top-level Source
+        mock_span.attributes = {"source": "runtime"}
+        mock_span.events = []
+        mock_span.links = []
+
+        current_time_ns = int(datetime.now().timestamp() * 1e9)
+        mock_span.start_time = current_time_ns
+        mock_span.end_time = current_time_ns + 1000000
+
+        uipath_span = _SpanUtils.otel_span_to_uipath_span(mock_span)
+        span_dict = uipath_span.to_dict()
+
+        # Top-level Source should be 4 (Robots), string "runtime" is ignored
+        assert uipath_span.source == 4
+        assert span_dict["Source"] == 4
+
+        # attributes.source string should still be in Attributes JSON
+        attrs = json.loads(span_dict["Attributes"])
+        assert attrs["source"] == "runtime"
+
+    @patch.dict(os.environ, {"UIPATH_ORGANIZATION_ID": "test-org"})
+    def test_uipath_span_source_override_with_uipath_source(self):
+        """Test that uipath.source attribute overrides default (for low-code agents)."""
+        mock_span = Mock(spec=OTelSpan)
+
+        trace_id = 0x123456789ABCDEF0123456789ABCDEF0
+        span_id = 0x0123456789ABCDEF
+        mock_context = SpanContext(trace_id=trace_id, span_id=span_id, is_remote=False)
+        mock_span.get_span_context.return_value = mock_context
+
+        mock_span.name = "test-span"
+        mock_span.parent = None
+        mock_span.status.status_code = StatusCode.OK
+        # uipath.source=1 (Agents) overrides default of 4 (Robots)
+        mock_span.attributes = {"uipath.source": 1, "source": "runtime"}
+        mock_span.events = []
+        mock_span.links = []
+
+        current_time_ns = int(datetime.now().timestamp() * 1e9)
+        mock_span.start_time = current_time_ns
+        mock_span.end_time = current_time_ns + 1000000
+
+        uipath_span = _SpanUtils.otel_span_to_uipath_span(mock_span)
+        span_dict = uipath_span.to_dict()
+
+        # uipath.source overrides - low-code agents use 1 (Agents)
+        assert uipath_span.source == 1
+        assert span_dict["Source"] == 1
+
+        # String source still in Attributes JSON
+        attrs = json.loads(span_dict["Attributes"])
+        assert attrs["source"] == "runtime"
diff --git a/uv.lock b/uv.lock
index 993b17e28..e09e0210d 100644
--- a/uv.lock
+++ b/uv.lock
@@ -2491,7 +2491,7 @@ wheels = [
 
 [[package]]
 name = "uipath"
-version = "2.6.27"
+version = "2.6.28"
 source = { editable = "." }
 dependencies = [
     { name = "applicationinsights" },