diff --git a/pandaclient/JobSpec.py b/pandaclient/JobSpec.py
index 2c030fa..93a8799 100755
--- a/pandaclient/JobSpec.py
+++ b/pandaclient/JobSpec.py
@@ -236,7 +236,7 @@ def __setattr__(self, name, value):
         newVal = getattr(self, name)
         if name == "jobStatus":
             if oldVal != newVal:
-                self.stateChangeTime = datetime.datetime.now(datetime.UTC)
+                self.stateChangeTime = datetime.datetime.utcnow()
         # collect changed attributes
         if oldVal != newVal and name not in self._suppAttrs:
             self._changedAttrs[name] = value
diff --git a/pandaclient/PdbUtils.py b/pandaclient/PdbUtils.py
index 4c4106e..b2e60c0 100644
--- a/pandaclient/PdbUtils.py
+++ b/pandaclient/PdbUtils.py
@@ -499,7 +499,7 @@ def initialzieDB(verbose=False, restoreDB=False):
 def insertJobDB(job, verbose=False):
     tmpLog = PLogger.getPandaLogger()
     # set update time
-    job.lastUpdate = datetime.datetime.now(datetime.UTC)
+    job.lastUpdate = datetime.datetime.utcnow()
     # make sql
     sql1 = "INSERT INTO %s (%s) " % (pdbProxy.tablename, LocalJobSpec.columnNames())
     sql1 += "VALUES " + job.values()
@@ -519,7 +519,7 @@ def updateJobDB(job, verbose=False, updateTime=None):
         job.lastUpdate = updateTime
         sql1 += " AND lastUpdate<'%s' " % updateTime.strftime("%Y-%m-%d %H:%M:%S")
     else:
-        job.lastUpdate = datetime.datetime.now(datetime.UTC)
+        job.lastUpdate = datetime.datetime.utcnow()
     status, out = pdbProxy.execute_direct(sql1)
     if not status:
         raise RuntimeError("failed to update job")
@@ -539,7 +539,7 @@ def setRetryID(job, verbose=False):
 # delete old jobs
 def deleteOldJobs(days, verbose=False):
     # time limit
-    limit = datetime.datetime.now(datetime.UTC) - datetime.timedelta(days=days)
+    limit = datetime.datetime.utcnow() - datetime.timedelta(days=days)
     # make sql
     sql1 = "DELETE FROM %s " % pdbProxy.tablename
     sql1 += " WHERE creationTime<'%s' " % limit.strftime("%Y-%m-%d %H:%M:%S")
diff --git a/pandaclient/PsubUtils.py b/pandaclient/PsubUtils.py
index 7ecc279..9738708 100644
--- a/pandaclient/PsubUtils.py
+++ b/pandaclient/PsubUtils.py
@@ -48,7 +48,7 @@ def resetCacheValues():
     global cacheActime
     global cacheLastUpdate
     global cacheVomsInfo
-    timeNow = datetime.datetime.now(datetime.UTC)
+    timeNow = datetime.datetime.utcnow()
     if cacheLastUpdate is None or (timeNow - cacheLastUpdate) > datetime.timedelta(minutes=60):
         cacheLastUpdate = timeNow
         cacheProxyStatus = None
diff --git a/pandaclient/openidc_utils.py b/pandaclient/openidc_utils.py
index 8304e0b..e9efde5 100644
--- a/pandaclient/openidc_utils.py
+++ b/pandaclient/openidc_utils.py
@@ -80,7 +80,7 @@ def get_id_token(self, token_endpoint, client_id, client_secret, device_code, in
                 return False, "aborted"
         if self.verbose:
             self.log_stream.debug("getting ID token")
-        startTime = datetime.datetime.now(datetime.UTC)
+        startTime = datetime.datetime.utcnow()
         data = {
             "client_id": client_id,
             "client_secret": client_secret,
@@ -90,7 +90,7 @@ def get_id_token(self, token_endpoint, client_id, client_secret, device_code, in
         rdata = urlencode(data).encode()
         req = Request(token_endpoint, rdata)
         req.add_header("content-type", "application/x-www-form-urlencoded")
-        while datetime.datetime.now(datetime.UTC) - startTime < datetime.timedelta(seconds=expires_in):
+        while datetime.datetime.utcnow() - startTime < datetime.timedelta(seconds=expires_in):
             try:
                 conn = urlopen(req)
                 text = conn.read().decode()
@@ -173,8 +173,8 @@ def check_token(self):
                     # decode ID token
                     data = json.load(f)
                     dec = decode_id_token(data["id_token"])
-                    exp_time = datetime.datetime.utcfromtimestamp(dec["exp"])
-                    delta = exp_time - datetime.datetime.now(datetime.UTC)
+                    exp_time = datetime.datetime.timezone.utcfromtimestamp(dec["exp"])
+                    delta = exp_time - datetime.datetime.utcnow()
                     if self.verbose:
                         self.log_stream.debug("token expiration time : {0} UTC".format(exp_time.strftime("%Y-%m-%d %H:%M:%S")))
                     # check expiration time
diff --git a/pandaclient/queryPandaMonUtils.py b/pandaclient/queryPandaMonUtils.py
index 0ac2e53..af11981 100644
--- a/pandaclient/queryPandaMonUtils.py
+++ b/pandaclient/queryPandaMonUtils.py
@@ -65,7 +65,7 @@ def query_tasks(
         else:
             rep = urlopen(req, context=context)
         if verbose:
-            sys.stderr.write("time UTC  = {0}\n".format(datetime.datetime.now(datetime.UTC)))
+            sys.stderr.write("time UTC  = {0}\n".format(datetime.datetime.utcnow()))
         rec = rep.getcode()
         if verbose:
             sys.stderr.write("resp code = {0}\n".format(rec))
@@ -116,7 +116,7 @@ def query_jobs(jeditaskid, limit=10000, drop=True, verbose=False):
         else:
             rep = urlopen(req, context=context)
         if verbose:
-            sys.stderr.write("time UTC  = {0}\n".format(datetime.datetime.now(datetime.UTC)))
+            sys.stderr.write("time UTC  = {0}\n".format(datetime.datetime.utcnow()))
         rec = rep.getcode()
         if verbose:
             sys.stderr.write("resp code = {0}\n".format(rec))