diff --git a/v2/devices.go b/v2/devices.go
index f9ae664..1d7e1bd 100644
--- a/v2/devices.go
+++ b/v2/devices.go
@@ -72,6 +72,12 @@ type DevicePostureAttributes struct {
 	Expiries   map[string]Time `json:"expiries"`
 }
 
+type DevicePostureAttributeRequest struct {
+	Value   any    `json:"value"`
+	Expiry  Time   `json:"expiry"`
+	Comment string `json:"comment"`
+}
+
 // Get gets the [Device] identified by deviceID.
 func (dr *DevicesResource) Get(ctx context.Context, deviceID string) (*Device, error) {
 	req, err := dr.buildRequest(ctx, http.MethodGet, dr.buildURL("device", deviceID))
@@ -82,6 +88,7 @@ func (dr *DevicesResource) Get(ctx context.Context, deviceID string) (*Device, e
 	return body[Device](dr, req)
 }
 
+// GetPostureAttributes retrieves the posture attributes of the device identified by deviceID.
 func (dr *DevicesResource) GetPostureAttributes(ctx context.Context, deviceID string) (*DevicePostureAttributes, error) {
 	req, err := dr.buildRequest(ctx, http.MethodGet, dr.buildURL("device", deviceID, "attributes"))
 	if err != nil {
@@ -153,6 +160,16 @@ func (dr *DevicesResource) SetTags(ctx context.Context, deviceID string, tags []
 	return dr.do(req, nil)
 }
 
+// SetPostureAttribute sets the posture attribute of the device identified by deviceID.
+func (dr *DevicesResource) SetPostureAttribute(ctx context.Context, deviceID, attributeKey string, request DevicePostureAttributeRequest) error {
+	req, err := dr.buildRequest(ctx, http.MethodPost, dr.buildURL("device", deviceID, "attributes", attributeKey), requestBody(request))
+	if err != nil {
+		return err
+	}
+
+	return dr.do(req, nil)
+}
+
 // DeviceKey type represents the properties of the key of an individual device within
 // the tailnet.
 type DeviceKey struct {
diff --git a/v2/devices_test.go b/v2/devices_test.go
index ec0cdf0..5786090 100644
--- a/v2/devices_test.go
+++ b/v2/devices_test.go
@@ -310,6 +310,32 @@ func TestClient_SetDeviceTags(t *testing.T) {
 	assert.EqualValues(t, tags, body["tags"])
 }
 
+func TestClient_SetDevicePostureAttributes(t *testing.T) {
+	t.Parallel()
+
+	client, server := NewTestHarness(t)
+	server.ResponseCode = http.StatusOK
+	server.ResponseBody = nil
+
+	const deviceID = "test"
+	const attributeKey = "custom:test"
+
+	setRequest := tsclient.DevicePostureAttributeRequest{
+		Value:   "value",
+		Expiry:  tsclient.Time{time.Date(2022, 2, 10, 11, 50, 23, 0, time.UTC)},
+		Comment: "test",
+	}
+
+	assert.NoError(t, client.Devices().SetPostureAttribute(context.Background(), deviceID, attributeKey, setRequest))
+	assert.EqualValues(t, http.MethodPost, server.Method)
+	assert.EqualValues(t, "/api/v2/device/"+deviceID+"/attributes/"+attributeKey, server.Path)
+
+	var receivedRequest tsclient.DevicePostureAttributeRequest
+	err := json.Unmarshal(server.Body.Bytes(), &receivedRequest)
+	assert.NoError(t, err)
+	assert.EqualValues(t, setRequest, receivedRequest)
+}
+
 func TestClient_SetDeviceKey(t *testing.T) {
 	t.Parallel()
 
@@ -329,8 +355,8 @@ func TestClient_SetDeviceKey(t *testing.T) {
 	var actual tsclient.DeviceKey
 	assert.NoError(t, json.Unmarshal(server.Body.Bytes(), &actual))
 	assert.EqualValues(t, expected, actual)
-
 }
+
 func TestClient_SetDeviceIPv4Address(t *testing.T) {
 	t.Parallel()