diff --git a/ChangeLog b/ChangeLog
index 376bb643..88133581 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,7 @@
-2025-01-10 Jan Kotanski <jankotan@gmail.com>
+2025-01-13 Jan Kotanski <jankotan@gmail.com>
 	* add support for utf8 in xmla attribute/field values  (#174)
-	* drop support for python2
-	* tagged as 4.0.0
+	* add support for utf8 in py2  (#176)
+	* tagged as 3.13.0
 
 2024-09-27 Jan Kotanski <jankotan@gmail.com>
 	* remove NXcollection attribute for nexus_logs  (#168)
diff --git a/man/nxswriter.1 b/man/nxswriter.1
index ec34a0d4..0e2e2974 100644
--- a/man/nxswriter.1
+++ b/man/nxswriter.1
@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "NXSWRITER" "1" "Jan 10, 2025" "4.0" "NXSDataWriter"
+.TH "NXSWRITER" "1" "Jan 13, 2025" "3.13" "NXSDataWriter"
 .SH NAME
 nxswriter \- nxswriter Documentation
 .sp
diff --git a/nxswriter/Release.py b/nxswriter/Release.py
index 4c4a25f3..0d96fe35 100644
--- a/nxswriter/Release.py
+++ b/nxswriter/Release.py
@@ -21,4 +21,4 @@
 
 
 #: package version
-__version__ = "4.0.0"
+__version__ = "3.13.0"
diff --git a/setup.py b/setup.py
index 3ef39b69..e9a97dad 100644
--- a/setup.py
+++ b/setup.py
@@ -110,6 +110,7 @@ def run(self):
         'Topic :: Scientific/Engineering :: Physics',
         'Topic :: Software Development :: Libraries :: Python Modules',
         'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
+        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
diff --git a/test/TangoDataWriterH5Cpp_test.py b/test/TangoDataWriterH5Cpp_test.py
index 7dbf558e..e16da4f2 100644
--- a/test/TangoDataWriterH5Cpp_test.py
+++ b/test/TangoDataWriterH5Cpp_test.py
@@ -50,11 +50,11 @@ class TangoDataWriterH5CppTest(unittest.TestCase):
     def __init__(self, methodName):
         unittest.TestCase.__init__(self, methodName)
 
-        self._scanXmlpart = """
+        self._scanXmlpart = u"""
     <group type="NXinstrument" name="instrument">
       <attribute name ="short_name"> scan instrument </attribute>
       <group type="NXdetector" name="detector">
-        <field units="µm" type="NX_FLOAT" name="counter1">
+        <field units="\u03bcm" type="NX_FLOAT" name="counter1">
           <strategy mode="STEP"/>
           <datasource type="CLIENT">
             <record name="exp_c01"/>
@@ -1683,7 +1683,10 @@ def test_scanRecord_nexuspath(self):
             self.assertEqual(at.shape, ())
             self.assertEqual(at.dtype, "string")
             self.assertEqual(at.name, "units")
-            self.assertEqual(at[...], u"µm")
+            if sys.version_info > (3, ):
+                self.assertEqual(at[...], u"\u03bcm")
+            else:
+                self.assertEqual(at[...], b"\xce\xbcm")
 
             at = cnt.attributes["nexdatas_source"]
             self.assertTrue(at.is_valid)
diff --git a/test/TangoDataWriterH5PY_test.py b/test/TangoDataWriterH5PY_test.py
index 0bb936ec..a20f680f 100644
--- a/test/TangoDataWriterH5PY_test.py
+++ b/test/TangoDataWriterH5PY_test.py
@@ -54,7 +54,7 @@ def __init__(self, methodName):
     <group type="NXinstrument" name="instrument">
       <attribute name ="short_name"> scan instrument </attribute>
       <group type="NXdetector" name="detector">
-        <field units="µm" type="NX_FLOAT" name="counter1">
+        <field units="\u03bcm" type="NX_FLOAT" name="counter1">
           <strategy mode="STEP"/>
           <datasource type="CLIENT">
             <record name="exp_c01"/>
@@ -1681,7 +1681,10 @@ def test_scanRecord_nexuspath(self):
             self.assertEqual(at.shape, ())
             self.assertEqual(at.dtype, "string")
             self.assertEqual(at.name, "units")
-            self.assertEqual(at[...], u"µm")
+            if sys.version_info > (3, ):
+                self.assertEqual(at[...], u"\u03bcm")
+            else:
+                self.assertEqual(at[...], b"\xce\xbcm")
 
             at = cnt.attributes["nexdatas_source"]
             self.assertTrue(at.is_valid)