diff --git a/etcd3gw/examples/etcd.py b/etcd3gw/examples/etcd.py
index 9b019b0..b4245b1 100644
--- a/etcd3gw/examples/etcd.py
+++ b/etcd3gw/examples/etcd.py
@@ -10,12 +10,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-try:
-    # Python 3.8 : time.clock was deprecated and removed.
-    from time import perf_counter as clock
-except ImportError:
-    from time import clock
-
+import time
 
 from etcd3gw.client import Etcd3Client
 from etcd3gw.lock import Lock
@@ -59,7 +54,7 @@ def main():
     print("Key delete foo-unknown : %r" % result)
 
     print('>>>> Lock')
-    lock = Lock('xyz-%s' % clock(), ttl=10000, client=client)
+    lock = Lock('xyz-%s' % time.perf_counter(), ttl=10000, client=client)
     result = lock.acquire()
     print("acquire : %r" % result)
     result = lock.refresh()
diff --git a/etcd3gw/tests/test_etcd3gw.py b/etcd3gw/tests/test_etcd3gw.py
index 1195cfa..158d866 100644
--- a/etcd3gw/tests/test_etcd3gw.py
+++ b/etcd3gw/tests/test_etcd3gw.py
@@ -33,12 +33,6 @@ from etcd3gw import exceptions
 from etcd3gw.tests import base
 from etcd3gw import utils
 
-try:
-    # Python 3.8 : time.clock was deprecated and removed.
-    from time import perf_counter as clock
-except ImportError:
-    from time import clock
-
 
 def _is_etcd3_running():
     try:
@@ -413,7 +407,7 @@ class TestEtcd3Gateway(base.TestCase):
     @unittest.skipUnless(
         _is_etcd3_running(), "etcd3 is not available")
     def test_client_locks(self):
-        lock = self.client.lock(id='xyz-%s' % clock(), ttl=60)
+        lock = self.client.lock(id='xyz-%s' % time.perf_counter(), ttl=60)
         self.assertIsNotNone(lock)
 
         self.assertTrue(lock.acquire())