diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 57fedd7278d..f6774a0d5dc 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -6,5 +6,5 @@ jinja2>=2.9.5
 voluptuous==0.10.5
 typing>=3,<4
 aiohttp==2.0.7
-async_timeout==1.2.0
+async_timeout==1.2.1
 chardet==3.0.2
diff --git a/requirements_all.txt b/requirements_all.txt
index a78285d5b5b..ab326c70b48 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -7,7 +7,7 @@ jinja2>=2.9.5
 voluptuous==0.10.5
 typing>=3,<4
 aiohttp==2.0.7
-async_timeout==1.2.0
+async_timeout==1.2.1
 chardet==3.0.2
 
 # homeassistant.components.nuimo_controller
diff --git a/setup.py b/setup.py
index 65d02c3e8c6..d0f4ccbd75b 100755
--- a/setup.py
+++ b/setup.py
@@ -23,7 +23,7 @@ REQUIRES = [
     'voluptuous==0.10.5',
     'typing>=3,<4',
     'aiohttp==2.0.7',
-    'async_timeout==1.2.0',
+    'async_timeout==1.2.1',
     'chardet==3.0.2'
 ]