diff --git a/src/buildkite_test_collector/collector/run_env.py b/src/buildkite_test_collector/collector/run_env.py
index 1512859..93355a0 100644
--- a/src/buildkite_test_collector/collector/run_env.py
+++ b/src/buildkite_test_collector/collector/run_env.py
@@ -1,5 +1,6 @@
 """Test Engine run_env"""
 
+import platform
 from dataclasses import dataclass
 from typing import Dict, Optional, Mapping
 from uuid import uuid4
@@ -140,7 +141,8 @@ def as_json(self) -> Dict[str, str]:
             "message": self.message,
             "url": self.url,
             "collector": f"python-{COLLECTOR_NAME}",
-            "version": VERSION
+            "version": VERSION,
+            "language_version": f"{platform.python_version()}"
         }
 
         return {k: v for k, v in attrs.items() if v is not None}
diff --git a/src/buildkite_test_collector/pytest_plugin/buildkite_plugin.py b/src/buildkite_test_collector/pytest_plugin/buildkite_plugin.py
index 3a25ad5..1ab4271 100644
--- a/src/buildkite_test_collector/pytest_plugin/buildkite_plugin.py
+++ b/src/buildkite_test_collector/pytest_plugin/buildkite_plugin.py
@@ -90,6 +90,7 @@ def pytest_runtest_logfinish(self, nodeid, location):  # pylint: disable=unused-
             )
 
     def update_test_result(self, report):
+        """Update test result based on pytest report"""
         test_data = self.in_flight.get(report.nodeid)
 
         if test_data:
diff --git a/tests/buildkite_test_collector/collector/test_run_env.py b/tests/buildkite_test_collector/collector/test_run_env.py
index e906237..9ae4660 100644
--- a/tests/buildkite_test_collector/collector/test_run_env.py
+++ b/tests/buildkite_test_collector/collector/test_run_env.py
@@ -1,3 +1,4 @@
+import sys
 from random import randint
 from uuid import uuid4, UUID
 
@@ -102,3 +103,5 @@ def test_env_as_json(fake_env):
     assert json["url"] == fake_env.url
     assert json["collector"] == 'python-buildkite-test-collector'
     assert json["version"] == VERSION
+    expected_version = f"{sys.version_info.major}.{sys.version_info.minor}.{sys.version_info.micro}"
+    assert json["language_version"] == expected_version