diff --git a/esrally/client/asynchronous.py b/esrally/client/asynchronous.py
index 9c32efc44..76b18da84 100644
--- a/esrally/client/asynchronous.py
+++ b/esrally/client/asynchronous.py
@@ -77,7 +77,7 @@ async def send(self, conn: "Connection") -> "ClientResponse":
         self.response = self.response_class(
             self.method,
             self.original_url,
-            writer=self._writer,  # type: ignore[arg-type]  # TODO remove this ignore when introducing type hints
+            writer=self._writer,
             continue100=self._continue,
             timer=self._timer,
             request_info=self.request_info,
diff --git a/pyproject.toml b/pyproject.toml
index 557c6b986..d80b854c0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,13 +41,12 @@ classifiers = [
 ################################################################################################
 dependencies = [
     # License: Apache 2.0
-    # transitive dependencies:
-    #   urllib3: MIT
-    #   aiohttp: Apache 2.0
-
     "elasticsearch[async]==8.6.1",
     "elastic-transport==8.4.1",
+    # License: MIT
     "urllib3==1.26.19",
+    # License: Apache 2.0
+    "aiohttp==3.10.11",
     "docker==6.0.0",
     # avoid specific requests version to fix bug in docker-py
     "requests<2.32.0",