diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 50e006c3d7..7642ef3480 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -27,6 +27,7 @@ ruamel.yaml==0.15.100
 sqlalchemy==1.3.18
 voluptuous-serialize==2.4.0
 voluptuous==0.11.7
+yarl==1.4.2
 zeroconf==0.27.1
 
 pycryptodome>=3.6.6
diff --git a/requirements.txt b/requirements.txt
index 93a9511265..efae1204e1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,3 +20,4 @@ requests==2.24.0
 ruamel.yaml==0.15.100
 voluptuous==0.11.7
 voluptuous-serialize==2.4.0
+yarl==1.4.2
diff --git a/setup.py b/setup.py
index c2042ab245..7cf06942f3 100755
--- a/setup.py
+++ b/setup.py
@@ -52,6 +52,7 @@ REQUIRES = [
     "ruamel.yaml==0.15.100",
     "voluptuous==0.11.7",
     "voluptuous-serialize==2.4.0",
+    "yarl==1.4.2",
 ]
 
 MIN_PY_VERSION = ".".join(map(str, hass_const.REQUIRED_PYTHON_VER))