diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 2422278..4622631 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -15,7 +15,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.8"
           - "3.9"
           - "3.10"
           - "3.11"
diff --git a/README.rst b/README.rst
index 33dcc13..1673349 100644
--- a/README.rst
+++ b/README.rst
@@ -19,7 +19,7 @@ There are two available implementations:
 
 Both layers support a single-server and sharded configurations.
 
-`channels_redis` is tested against Python 3.8 to 3.13, `redis-py` versions 4.6,
+`channels_redis` is tested against Python 3.9 to 3.13, `redis-py` versions 4.6,
 5.0, and the development branch, and Channels versions 3, 4 and the development
 branch there.
 
diff --git a/setup.py b/setup.py
index a368709..bf272f7 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@
     zip_safe=False,
     packages=find_packages(exclude=["tests"]),
     include_package_data=True,
-    python_requires=">=3.8",
+    python_requires=">=3.9",
     install_requires=[
         "redis>=4.6",
         "msgpack~=1.0",
diff --git a/tests/test_pubsub.py b/tests/test_pubsub.py
index 3c00dd6..07ecca8 100644
--- a/tests/test_pubsub.py
+++ b/tests/test_pubsub.py
@@ -61,7 +61,8 @@ async def test_send_receive(channel_layer):
     assert message["text"] == "Ahoy-hoy!"
 
 
-def test_send_receive_sync(channel_layer, event_loop):
+def test_send_receive_sync(channel_layer):
+    event_loop = asyncio.new_event_loop()
     _await = event_loop.run_until_complete
     channel = _await(channel_layer.new_channel())
     async_to_sync(channel_layer.send, force_new_loop=True)(
@@ -70,6 +71,7 @@ def test_send_receive_sync(channel_layer, event_loop):
     message = _await(channel_layer.receive(channel))
     assert message["type"] == "test.message"
     assert message["text"] == "Ahoy-hoy!"
+    event_loop.close()
 
 
 @pytest.mark.asyncio
@@ -86,7 +88,8 @@ async def test_multi_send_receive(channel_layer):
     assert (await channel_layer.receive(channel))["type"] == "message.3"
 
 
-def test_multi_send_receive_sync(channel_layer, event_loop):
+def test_multi_send_receive_sync(channel_layer):
+    event_loop = asyncio.new_event_loop()
     _await = event_loop.run_until_complete
     channel = _await(channel_layer.new_channel())
     send = async_to_sync(channel_layer.send)
@@ -96,6 +99,7 @@ def test_multi_send_receive_sync(channel_layer, event_loop):
     assert _await(channel_layer.receive(channel))["type"] == "message.1"
     assert _await(channel_layer.receive(channel))["type"] == "message.2"
     assert _await(channel_layer.receive(channel))["type"] == "message.3"
+    event_loop.close()
 
 
 @pytest.mark.asyncio
diff --git a/tests/test_pubsub_sentinel.py b/tests/test_pubsub_sentinel.py
index 41b7de2..b4cbfb1 100644
--- a/tests/test_pubsub_sentinel.py
+++ b/tests/test_pubsub_sentinel.py
@@ -42,7 +42,8 @@ async def test_send_receive(channel_layer):
     assert message["text"] == "Ahoy-hoy!"
 
 
-def test_send_receive_sync(channel_layer, event_loop):
+def test_send_receive_sync(channel_layer):
+    event_loop = asyncio.new_event_loop()
     _await = event_loop.run_until_complete
     channel = _await(channel_layer.new_channel())
     async_to_sync(channel_layer.send, force_new_loop=True)(
@@ -51,6 +52,7 @@ def test_send_receive_sync(channel_layer, event_loop):
     message = _await(channel_layer.receive(channel))
     assert message["type"] == "test.message"
     assert message["text"] == "Ahoy-hoy!"
+    event_loop.close()
 
 
 @pytest.mark.asyncio
@@ -67,7 +69,8 @@ async def test_multi_send_receive(channel_layer):
     assert (await channel_layer.receive(channel))["type"] == "message.3"
 
 
-def test_multi_send_receive_sync(channel_layer, event_loop):
+def test_multi_send_receive_sync(channel_layer):
+    event_loop = asyncio.new_event_loop()
     _await = event_loop.run_until_complete
     channel = _await(channel_layer.new_channel())
     send = async_to_sync(channel_layer.send)
@@ -77,6 +80,7 @@ def test_multi_send_receive_sync(channel_layer, event_loop):
     assert _await(channel_layer.receive(channel))["type"] == "message.1"
     assert _await(channel_layer.receive(channel))["type"] == "message.2"
     assert _await(channel_layer.receive(channel))["type"] == "message.3"
+    event_loop.close()
 
 
 @pytest.mark.asyncio
diff --git a/tox.ini b/tox.ini
index 7417992..af89536 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{38,39,310,311,312,313}-ch{30,40,main}-redis50
+    py{39,310,311,312,313}-ch{30,40,main}-redis50
     py311-chmain-redis{45,46,50,main}
     qa