diff --git a/tools/webdriver/webdriver/bidi/modules/session.py b/tools/webdriver/webdriver/bidi/modules/session.py
index 725aab1bec72fa..843352baaa9c04 100644
--- a/tools/webdriver/webdriver/bidi/modules/session.py
+++ b/tools/webdriver/webdriver/bidi/modules/session.py
@@ -40,9 +40,14 @@ def subscribe(self,
 
     @command
     def unsubscribe(self,
-                    events: List[str],
-                    contexts: Optional[List[str]] = None) -> Mapping[str, Any]:
-        params: MutableMapping[str, Any] = {"events": events}
+                    events: Optional[List[str]] = None,
+                    contexts: Optional[List[str]] = None,
+                    subscriptions: Optional[List[str]] = None) -> Mapping[str, Any]:
+        params: MutableMapping[str, Any] = {}
         if contexts is not None:
             params["contexts"] = contexts
+        if events is not None:
+            params["events"] = events
+        if subscriptions is not None:
+            params["subscriptions"] = subscriptions
         return params
diff --git a/webdriver/tests/bidi/session/unsubscribe/invalid.py b/webdriver/tests/bidi/session/unsubscribe/invalid.py
index c286bc09ee04d7..0b13e949673c19 100644
--- a/webdriver/tests/bidi/session/unsubscribe/invalid.py
+++ b/webdriver/tests/bidi/session/unsubscribe/invalid.py
@@ -198,3 +198,17 @@ async def test_params_unsubscribe_from_one_context_with_global_subscription(
     # Try to unsubscribe from one context
     with pytest.raises(InvalidArgumentException):
         await bidi_session.session.unsubscribe(events=["log.entryAdded"], contexts=[top_context["context"]])
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("subscriptions", [None, True, 42, {}, "foo"])
+async def test_params_subscriptions_invalid_type(bidi_session, subscriptions):
+    with pytest.raises(InvalidArgumentException):
+        await bidi_session.session.unsubscribe(subscriptions=subscriptions)
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("subscriptions", [[""], ["12345678-1234-5678-1234-567812345678"]])
+async def test_params_subscriptions_invalid_value(bidi_session, subscriptions):
+    with pytest.raises(InvalidArgumentException):
+        await bidi_session.session.unsubscribe(subscriptions=subscriptions)