diff --git a/src/kimi_cli/auth/oauth.py b/src/kimi_cli/auth/oauth.py
index 96d025d96..492595bd0 100644
--- a/src/kimi_cli/auth/oauth.py
+++ b/src/kimi_cli/auth/oauth.py
@@ -209,7 +209,7 @@ def _common_headers() -> dict[str, str]:
         "X-Msh-Version": VERSION,
         "X-Msh-Device-Name": device_name,
         "X-Msh-Device-Model": device_model,
-        "X-Msh-Os-Version": platform.version(),
+        "X-Msh-Os-Version": f"{platform.system()} {platform.release()}",
         "X-Msh-Device-Id": get_device_id(),
     }
     return {key: _ascii_header_value(value) for key, value in headers.items()}
diff --git a/src/kimi_cli/utils/environment.py b/src/kimi_cli/utils/environment.py
index 6b4bb78ad..efd66dc84 100644
--- a/src/kimi_cli/utils/environment.py
+++ b/src/kimi_cli/utils/environment.py
@@ -28,7 +28,7 @@ async def detect() -> Environment:
                 os_kind = system
 
         os_arch = platform.machine()
-        os_version = platform.version()
+        os_version = f"{platform.system()} {platform.release()}"
 
         if os_kind == "Windows":
             shell_name = "Windows PowerShell"
diff --git a/tests/utils/test_utils_environment.py b/tests/utils/test_utils_environment.py
index abb3a4ae4..b021e59f1 100644
--- a/tests/utils/test_utils_environment.py
+++ b/tests/utils/test_utils_environment.py
@@ -8,7 +8,7 @@
 async def test_environment_detection(monkeypatch):
     monkeypatch.setattr(platform, "system", lambda: "Linux")
     monkeypatch.setattr(platform, "machine", lambda: "x86_64")
-    monkeypatch.setattr(platform, "version", lambda: "5.15.0-123-generic")
+    monkeypatch.setattr(platform, "release", lambda: "5.15.0-123-generic")
 
     async def _mock_is_file(self: KaosPath) -> bool:
         return str(self) == "/usr/bin/bash"
@@ -20,7 +20,7 @@ async def _mock_is_file(self: KaosPath) -> bool:
     env = await Environment.detect()
     assert env.os_kind == "Linux"
     assert env.os_arch == "x86_64"
-    assert env.os_version == "5.15.0-123-generic"
+    assert env.os_version == "Linux 5.15.0-123-generic"
     assert env.shell_name == "bash"
     assert str(env.shell_path) == "/usr/bin/bash"
 
@@ -29,13 +29,13 @@ async def _mock_is_file(self: KaosPath) -> bool:
 async def test_environment_detection_windows(monkeypatch):
     monkeypatch.setattr(platform, "system", lambda: "Windows")
     monkeypatch.setattr(platform, "machine", lambda: "AMD64")
-    monkeypatch.setattr(platform, "version", lambda: "10.0.19044")
+    monkeypatch.setattr(platform, "release", lambda: "10.0.19044")
 
     from kimi_cli.utils.environment import Environment
 
     env = await Environment.detect()
     assert env.os_kind == "Windows"
     assert env.os_arch == "AMD64"
-    assert env.os_version == "10.0.19044"
+    assert env.os_version == "Windows 10.0.19044"
     assert env.shell_name == "Windows PowerShell"
     assert str(env.shell_path) == "powershell.exe"