diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index e9415033..efd27986 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.8, 3.9, pypy-3.8, pypy-3.9, pypy-3.10, '3.10', '3.11' , '3.12.0-beta.4']
+        python-version: [3.8, 3.9, pypy-3.8, pypy-3.9, pypy-3.10, '3.10', '3.11' , '3.12.0-rc.1']
         os: [
           ubuntu-latest,
           windows-latest,
diff --git a/README.rst b/README.rst
index 532eb29b..60018005 100644
--- a/README.rst
+++ b/README.rst
@@ -41,7 +41,7 @@ The library can be used in these ways:
     from json2xml.utils import readfromurl, readfromstring, readfromjson
 
     # get the xml from an URL that return json
-    data = readfromurl("https://coderwall.com/vinitcool76.json")
+    data = readfromurl("https://api.publicapis.org/entries")
     print(json2xml.Json2xml(data).to_xml())
 
     # get the xml from a json string like this:
diff --git a/json2xml/dicttoxml.py b/json2xml/dicttoxml.py
index 3302753a..ace0e693 100644
--- a/json2xml/dicttoxml.py
+++ b/json2xml/dicttoxml.py
@@ -247,7 +247,7 @@ def dict2xml_str(
     val_attr: dict[str, str] = item.pop("@attrs", attr)  # update attr with custom @attr if exists
     rawitem = item["@val"] if "@val" in item else item
     if is_primitive_type(rawitem):
-        if type(rawitem) == str:
+        if isinstance(rawitem , str):
             subtree = escape_xml(rawitem)
         else:
             subtree = rawitem
diff --git a/tests/test_json2xml.py b/tests/test_json2xml.py
index 4c3e552e..c1e965c9 100644
--- a/tests/test_json2xml.py
+++ b/tests/test_json2xml.py
@@ -51,12 +51,12 @@ def test_read_from_invalid_json2(self):
         assert pytest_wrapped_e.type == JSONReadError
 
     def test_read_from_url(self):
-        data = readfromurl("https://coderwall.com/vinitcool76.json")
+        data = readfromurl("https://api.publicapis.org/entries")
         assert type(data) is dict
 
     def test_read_from_wrong_url(self):
         with pytest.raises(URLReadError) as pytest_wrapped_e:
-            readfromurl("https://coderwall.com/vinitcool76.jsoni")
+            readfromurl("https://api.publicapis.org/entriesi")
         assert pytest_wrapped_e.type == URLReadError
 
     def test_read_from_jsonstring(self):