diff --git a/requirements.txt b/requirements.txt
index 692d422..162e4d2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-aiohttp==0.19.0
+aiohttp==3.7.4
 alabaster==0.7.7
 astroid==1.4.3
 asynctest==0.5.0
diff --git a/setup.py b/setup.py
index 6a25cb7..4e20ad6 100644
--- a/setup.py
+++ b/setup.py
@@ -56,7 +56,7 @@ def run_tests(self):
     extras_require=dict(
         examples=['atmdb>=0.1.3'],
     ),
-    install_requires=['aiohttp>=0.15.0,<0.21'],
+    install_requires=['aiohttp>=0.15.0,<3.8'],
     license='License :: OSI Approved :: ISC License (ISCL)',
     long_description=long_description,
     name='aslack',