diff --git a/pyproject.toml b/pyproject.toml
index d16617e..e32fb68 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "rda_python_dsupdt"
-version = "2.0.1"
+version = "2.0.2"
 authors = [
   { name="Zaihua Ji", email="zji@ucar.edu" },
 ]
diff --git a/src/rda_python_dsupdt/dsupdt.py b/src/rda_python_dsupdt/dsupdt.py
index c24e47e..817fb84 100644
--- a/src/rda_python_dsupdt/dsupdt.py
+++ b/src/rda_python_dsupdt/dsupdt.py
@@ -18,8 +18,9 @@
 import re
 from os import path as op
 from .pg_updt import PgUpdt
+from rda_python_common.pg_split import PgSplit
 
-class DsUpdt(PgUpdt):
+class DsUpdt(PgUpdt, PgSplit):
    def __init__(self):
       super().__init__()  # initialize parent class
       self.TEMPINFO = {}
@@ -1333,7 +1334,7 @@ def archive_data_file(self, lfile, locrec, tempinfo, eidx):
       if tempinfo['gotnew'] and not re.search(r'(^|\s)-OE(\s|$)', options, re.I): acmd += " -OE"
       if 'VS' in self.params:
          acmd += " -VS {}".format(self.params['VS'])
-         if 'VS' in tempinfo: options = re.sub('-VS\s+\d+(\s+|$)', '', options, flags=re.I)
+         if 'VS' in tempinfo: options = re.sub(r'-VS\s+\d+(\s+|$)', '', options, flags=re.I)
       if tempinfo['RS'] == 1: acmd += " -RS"
       fnote = None
       if locrec['note'] and not re.search(r'(^|\s)-DE(\s|$)', options, re.I):
@@ -1705,7 +1706,7 @@ def build_data_note(self, onote, lfile, locrec, tempinfo):
          return onote
       if pcnt == 2:   # replace start time
          if onote:   # get start time from existing note
-            replace = "{}{}{}".format(seps[0], patterns[0], seps[1])
+            replace = r"{}{}{}".format(seps[0], patterns[0], seps[1])
             ms = re.match(r'^(.*){}(.*){}'.format(replace, self.params['PD'][0]), note)
             if ms:
                init = ms.group(1)
diff --git a/src/rda_python_dsupdt/pg_updt.py b/src/rda_python_dsupdt/pg_updt.py
index 189ac42..4669bad 100644
--- a/src/rda_python_dsupdt/pg_updt.py
+++ b/src/rda_python_dsupdt/pg_updt.py
@@ -1071,7 +1071,7 @@ def check_server_file(self, dcmd, opt, cfile):
          ms = re.match(r'^(-\w+)', buf)
          while ms:
             flg = ms.group(1)
-            buf = re.sub('^-\w+\s+'.format(flg), '', buf, 1)   # remove options
+            buf = re.sub(r'^-\w+\s+'.format(flg), '', buf, 1)   # remove options
             if flg != "-r":   # no option value
                m = re.match(r'^(\S+)\s', buf)
                if not m: break