diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 46dc2d027815..d9d8618f78e4 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -5,7 +5,7 @@ aiohttp_cors==0.7.0
 astral==1.10.1
 async-upnp-client==0.14.13
 async_timeout==3.0.1
-attrs==19.3.0
+attrs==20.3.0
 awesomeversion==21.2.3
 bcrypt==3.1.7
 certifi>=2020.12.5
diff --git a/requirements.txt b/requirements.txt
index 0a5b754dbfc2..6f6640764a60 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@
 aiohttp==3.7.4
 astral==1.10.1
 async_timeout==3.0.1
-attrs==19.3.0
+attrs==20.3.0
 awesomeversion==21.2.3
 bcrypt==3.1.7
 certifi>=2020.12.5
diff --git a/setup.py b/setup.py
index ce7d6b6883d5..04a334cfd210 100755
--- a/setup.py
+++ b/setup.py
@@ -35,7 +35,7 @@ REQUIRES = [
     "aiohttp==3.7.4",
     "astral==1.10.1",
     "async_timeout==3.0.1",
-    "attrs==19.3.0",
+    "attrs==20.3.0",
     "awesomeversion==21.2.3",
     "bcrypt==3.1.7",
     "certifi>=2020.12.5",