diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 5082fe5559d..cf1a20e1925 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -84,3 +84,6 @@ anyio>=3.3.1
 # websockets 10.0 is broken with AWS
 # https://github.com/aaugustin/websockets/issues/1065
 websockets==9.1
+
+# pytest_asyncio breaks our test suite. We rely on pytest-aiohttp instead
+pytest_asyncio==1000000000.0.0
diff --git a/script/gen_requirements_all.py b/script/gen_requirements_all.py
index 3deec512b4f..dd8bc989874 100755
--- a/script/gen_requirements_all.py
+++ b/script/gen_requirements_all.py
@@ -110,6 +110,9 @@ anyio>=3.3.1
 # websockets 10.0 is broken with AWS
 # https://github.com/aaugustin/websockets/issues/1065
 websockets==9.1
+
+# pytest_asyncio breaks our test suite. We rely on pytest-aiohttp instead
+pytest_asyncio==1000000000.0.0
 """
 
 IGNORE_PRE_COMMIT_HOOK_ID = (