diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 317c1c8bc6c..85f8d5dcf12 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -5,7 +5,7 @@ pip>=8.0.3
 jinja2>=2.10
 voluptuous==0.11.1
 typing>=3,<4
-aiohttp==3.1.0
+aiohttp==3.1.1
 async_timeout==2.0.1
 astral==1.6
 certifi>=2017.4.17
diff --git a/requirements_all.txt b/requirements_all.txt
index d57ecd7f93a..10e6050bd4b 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -6,7 +6,7 @@ pip>=8.0.3
 jinja2>=2.10
 voluptuous==0.11.1
 typing>=3,<4
-aiohttp==3.1.0
+aiohttp==3.1.1
 async_timeout==2.0.1
 astral==1.6
 certifi>=2017.4.17
diff --git a/setup.py b/setup.py
index 9324713e71e..db4b1f8df92 100755
--- a/setup.py
+++ b/setup.py
@@ -49,7 +49,7 @@ REQUIRES = [
     'jinja2>=2.10',
     'voluptuous==0.11.1',
     'typing>=3,<4',
-    'aiohttp==3.1.0',
+    'aiohttp==3.1.1',
     'async_timeout==2.0.1',
     'astral==1.6',
     'certifi>=2017.4.17',