diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 8706c78..ec86556 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -44,7 +44,7 @@ jobs:
 
   build-sdist:
     needs: validate-release-request
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     env:
       PIP_DISABLE_PIP_VERSION_CHECK: 1
diff --git a/tests/test_dns.py b/tests/test_dns.py
index 1240897..f61b1e8 100644
--- a/tests/test_dns.py
+++ b/tests/test_dns.py
@@ -165,7 +165,8 @@ class BaseTestDNS:
 
     def test_getaddrinfo_19(self):
         # musl always returns ai_canonname while macOS never return for IPs,
-        # but we strictly follow the docs to use the AI_CANONNAME flag
+        # but we strictly follow the docs to use the AI_CANONNAME flag in a
+        # shortcut __static_getaddrinfo_pyaddr()
         patch = self.implementation != 'asyncio'
 
         self._test_getaddrinfo('::1', 80)
@@ -176,7 +177,8 @@ class BaseTestDNS:
 
     def test_getaddrinfo_20(self):
         # musl always returns ai_canonname while macOS never return for IPs,
-        # but we strictly follow the docs to use the AI_CANONNAME flag
+        # but we strictly follow the docs to use the AI_CANONNAME flag in a
+        # shortcut __static_getaddrinfo_pyaddr()
         patch = self.implementation != 'asyncio'
 
         self._test_getaddrinfo('127.0.0.1', 80)
diff --git a/tests/test_tcp.py b/tests/test_tcp.py
index cc03a97..aa86d65 100644
--- a/tests/test_tcp.py
+++ b/tests/test_tcp.py
@@ -319,7 +319,8 @@ class _TestTCP:
                 ValueError, 'ssl_handshake_timeout is only meaningful'):
             self.loop.run_until_complete(
                 self.loop.create_server(
-                    lambda: None, host='::', port=0, ssl_handshake_timeout=10))
+                    lambda: None, host='::', port=0,
+                    ssl_handshake_timeout=SSL_HANDSHAKE_TIMEOUT))
 
     def test_create_server_9(self):
         async def handle_client(reader, writer):
@@ -550,7 +551,8 @@ class _TestTCP:
                 ValueError, 'ssl_handshake_timeout is only meaningful'):
             self.loop.run_until_complete(
                 self.loop.create_connection(
-                    lambda: None, host='::', port=0, ssl_handshake_timeout=10))
+                    lambda: None, host='::', port=0,
+                    ssl_handshake_timeout=SSL_HANDSHAKE_TIMEOUT))
 
     def test_transport_shutdown(self):
         CNT = 0           # number of clients that were successful
@@ -1224,7 +1226,7 @@ class _TestSSL(tb.SSLTestCase):
     def test_create_server_ssl_1(self):
         CNT = 0           # number of clients that were successful
         TOTAL_CNT = 25    # total number of clients that test will create
-        TIMEOUT = 10.0    # timeout for this test
+        TIMEOUT = 20.0    # timeout for this test
 
         A_DATA = b'A' * 1024 * 1024
         B_DATA = b'B' * 1024 * 1024
@@ -2038,7 +2040,7 @@ class _TestSSL(tb.SSLTestCase):
 
         CNT = 0           # number of clients that were successful
         TOTAL_CNT = 25    # total number of clients that test will create
-        TIMEOUT = 20.0    # timeout for this test
+        TIMEOUT = 60.0    # timeout for this test
 
         A_DATA = b'A' * 1024 * 1024
         B_DATA = b'B' * 1024 * 1024
diff --git a/tests/test_unix.py b/tests/test_unix.py
index 1c20635..87c1e7e 100644
--- a/tests/test_unix.py
+++ b/tests/test_unix.py
@@ -10,6 +10,9 @@ import sys
 from uvloop import _testbase as tb
 
 
+SSL_HANDSHAKE_TIMEOUT = 15.0
+
+
 class _TestUnix:
     def test_create_unix_server_1(self):
         CNT = 0           # number of clients that were successful
@@ -160,7 +163,8 @@ class _TestUnix:
                 ValueError, 'ssl_handshake_timeout is only meaningful'):
             self.loop.run_until_complete(
                 self.loop.create_unix_server(
-                    lambda: None, path='/tmp/a', ssl_handshake_timeout=10))
+                    lambda: None, path='/tmp/a',
+                    ssl_handshake_timeout=SSL_HANDSHAKE_TIMEOUT))
 
     def test_create_unix_server_existing_path_sock(self):
         with self.unix_sock_name() as path:
@@ -368,7 +372,8 @@ class _TestUnix:
                 ValueError, 'ssl_handshake_timeout is only meaningful'):
             self.loop.run_until_complete(
                 self.loop.create_unix_connection(
-                    lambda: None, path='/tmp/a', ssl_handshake_timeout=10))
+                    lambda: None, path='/tmp/a',
+                    ssl_handshake_timeout=SSL_HANDSHAKE_TIMEOUT))
 
 
 class Test_UV_Unix(_TestUnix, tb.UVTestCase):
@@ -567,7 +572,7 @@ class _TestSSL(tb.SSLTestCase):
             await fut
 
         async def start_server():
-            extras = dict(ssl_handshake_timeout=10.0)
+            extras = dict(ssl_handshake_timeout=SSL_HANDSHAKE_TIMEOUT)
 
             with tempfile.TemporaryDirectory() as td:
                 sock_name = os.path.join(td, 'sock')
@@ -628,7 +633,7 @@ class _TestSSL(tb.SSLTestCase):
             sock.close()
 
         async def client(addr):
-            extras = dict(ssl_handshake_timeout=10.0)
+            extras = dict(ssl_handshake_timeout=SSL_HANDSHAKE_TIMEOUT)
 
             reader, writer = await asyncio.open_unix_connection(
                 addr,