diff --git a/requirements.txt b/requirements.txt
index f754c67..32116a3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-aiohttp==3.7.4
+aiohttp==3.8.5
 asyncio==3.4.3
 isodate==0.6.0
 marshmallow==3.9.1
diff --git a/setup.py b/setup.py
index 115576b..5038254 100644
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@
     url="https://github.com/theopenconversationkit/tock-py/",
     packages=setuptools.find_packages(),
     install_requires=[
-        'aiohttp==3.7.4',
+        'aiohttp==3.8.5',
         'asyncio==3.4.3',
         'isodate==0.6.0',
         'marshmallow==3.9.1',