diff --git a/CHANGELOG.md b/CHANGELOG.md
index f65f083..2c11ff5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,13 +1,23 @@
 # Changelog
 
-## [v1.4.1](https://github.com/SebRut/pygrocy/tree/v1.4.1) (2022-07-28)
+## [v1.5.0](https://github.com/SebRut/pygrocy/tree/v1.5.0) (2022-09-19)
 
-[Full Changelog](https://github.com/SebRut/pygrocy/compare/v1.4.0...v1.4.1)
+[Full Changelog](https://github.com/SebRut/pygrocy/compare/v1.4.1...v1.5.0)
+
+**Closed issues:**
+
+- Update pydantic requirements from 1.10.0 to 1.10.2 [\#252](https://github.com/SebRut/pygrocy/issues/252)
 
 **Merged pull requests:**
 
+- Update pydantic requirement from \<1.10.0,\>=1.8.2 to \>=1.8.2,\<1.11.0 [\#251](https://github.com/SebRut/pygrocy/pull/251) ([dependabot[bot]](https://github.com/apps/dependabot))
+- Fix tzlocal dependency causing an exception [\#250](https://github.com/SebRut/pygrocy/pull/250) ([marcelvriend](https://github.com/marcelvriend))
 - Fix enabled features lookup [\#248](https://github.com/SebRut/pygrocy/pull/248) ([marcelvriend](https://github.com/marcelvriend))
 
+## [v1.4.1](https://github.com/SebRut/pygrocy/tree/v1.4.1) (2022-07-28)
+
+[Full Changelog](https://github.com/SebRut/pygrocy/compare/v1.4.0...v1.4.1)
+
 ## [v1.4.0](https://github.com/SebRut/pygrocy/tree/v1.4.0) (2022-07-24)
 
 [Full Changelog](https://github.com/SebRut/pygrocy/compare/v1.3.0...v1.4.0)
diff --git a/pygrocy/utils.py b/pygrocy/utils.py
index 4e85a91..e139f5f 100644
--- a/pygrocy/utils.py
+++ b/pygrocy/utils.py
@@ -1,14 +1,10 @@
 from datetime import datetime
 
-import iso8601
-import pytz
-from tzlocal import get_localzone
-
 
 def parse_date(input_value):
     if input_value == "" or input_value is None:
         return None
-    return iso8601.parse_date(input_value)
+    return datetime.fromisoformat(input_value)
 
 
 def parse_int(input_value, default_value=None):
@@ -40,8 +36,4 @@ def parse_bool_int(input_value):
 
 
 def localize_datetime(timestamp: datetime) -> datetime:
-    if timestamp.tzinfo is not None:
-        return timestamp
-
-    local_tz = get_localzone()
-    return local_tz.localize(timestamp).astimezone(pytz.utc)
+    return timestamp.astimezone()
diff --git a/setup.py b/setup.py
index 253dda9..e2012f8 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setuptools.setup(
     name="pygrocy",
-    version="1.4.1",
+    version="1.5.0",
     author="Sebastian Rutofski",
     author_email="kontakt@sebastian-rutofski.de",
     description="",
@@ -16,11 +16,9 @@
     packages=setuptools.find_packages(),
     install_requires=[
         "requests",
-        "iso8601>=0.1.16,<1.1.0",
-        "pytz>=2021.1,<2023.0",
-        "tzlocal>=2.1,<5.0",
+        "backports.zoneinfo;python_version<'3.9'",  # backports can be removed when python 3.8 support is dropped
         "deprecation~=2.1.0",
-        "pydantic>=1.8.2,<1.10.0",
+        "pydantic>=1.8.2,<1.11.0",
     ],
     classifiers=[
         "Programming Language :: Python :: 3",
diff --git a/stackaid.json b/stackaid.json
new file mode 100644
index 0000000..f31bc28
--- /dev/null
+++ b/stackaid.json
@@ -0,0 +1,14 @@
+{
+    "version": 1,
+    "dependencies": [
+        {
+            "source": "https://github.com/psf/requests"
+        },
+        {
+            "source": "https://github.com/pydantic/pydantic"
+        },
+        {
+            "source": "https://github.com/tox-dev/tox"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/test/test_utils.py b/test/test_utils.py
index 171bf0c..06fb838 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -1,12 +1,17 @@
 from datetime import datetime
-from unittest import TestCase
+
+try:
+    import zoneinfo
+except ImportError:
+    # backports can be removed when python 3.8 support is dropped
+    from backports import zoneinfo
 
 import pygrocy.utils as utils
 
 
-class TestUtils(TestCase):
+class TestUtils:
     def test_parse_date_valid(self):
-        date_str = "2019-05-04T11:31:04.563Z"
+        date_str = "2022-07-10 21:10:53"
         date_obj = utils.parse_date(date_str)
 
         assert isinstance(date_obj, datetime)
@@ -58,3 +63,37 @@ def test_parse_float_error(self):
         float_number = utils.parse_float(float_str, -1)
 
         assert float_number == -1
+
+    def test_localize_datetime_input_timezone_unaware(self):
+        date = datetime(2022, 7, 10, 21, 17, 34, 633809, tzinfo=None)
+
+        localized_datetime = utils.localize_datetime(date)
+
+        assert localized_datetime == datetime(
+            2022, 7, 10, 21, 17, 34, 633809, tzinfo=zoneinfo.ZoneInfo("localtime")
+        )
+
+    def test_localize_datetime_input_timezone_aware(self):
+        date = datetime(
+            2022,
+            7,
+            10,
+            13,
+            17,
+            34,
+            633809,
+            tzinfo=zoneinfo.ZoneInfo("America/Los_Angeles"),
+        )
+
+        localized_datetime = utils.localize_datetime(date)
+
+        assert localized_datetime == datetime(
+            2022,
+            7,
+            10,
+            13,
+            17,
+            34,
+            633809,
+            tzinfo=zoneinfo.ZoneInfo("America/Los_Angeles"),
+        )