diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index c9282920ae9..b06287bcf17 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -1,4 +1,4 @@
-aiohttp==3.4.4
+aiohttp==3.5.1
 astral==1.7.1
 async_timeout==3.0.1
 attrs==18.2.0
diff --git a/requirements_all.txt b/requirements_all.txt
index 412b274b08f..8fc5c08e737 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1,5 +1,5 @@
 # Home Assistant core
-aiohttp==3.4.4
+aiohttp==3.5.1
 astral==1.7.1
 async_timeout==3.0.1
 attrs==18.2.0
diff --git a/setup.py b/setup.py
index 84a0f8811a1..0581d7bfcfa 100755
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@ PROJECT_URLS = {
 PACKAGES = find_packages(exclude=['tests', 'tests.*'])
 
 REQUIRES = [
-    'aiohttp==3.4.4',
+    'aiohttp==3.5.1',
     'astral==1.7.1',
     'async_timeout==3.0.1',
     'attrs==18.2.0',