diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6a0a2bc..d30f193 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- remove `requests` from mandatory dependencies (accident in version 0.5.0)
+
 ## [0.5.0]
 
 ### Added
diff --git a/pyproject.toml b/pyproject.toml
index c6e4c88..486941e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -67,6 +67,7 @@ convention = "numpy"
 [tool.ruff.lint.per-file-ignores]
 # D104: Missing docstring in public package
 "__init__.py" = ["D104"]
+"src/tests/*" = ["D103"]
 
 [tool.ruff.format]
 docstring-code-format = false
diff --git a/src/ipyaladin/utils/_coordinate_parser.py b/src/ipyaladin/utils/_coordinate_parser.py
index cd94648..90e9bb7 100644
--- a/src/ipyaladin/utils/_coordinate_parser.py
+++ b/src/ipyaladin/utils/_coordinate_parser.py
@@ -1,9 +1,11 @@
-import warnings
+import json
+import re
 from typing import Tuple
+import urllib.parse
+import urllib.request
+import warnings
 
-import requests
 from astropy.coordinates import SkyCoord, Angle, Longitude, Latitude
-import re
 
 from ipyaladin.utils.exceptions import NameResolverWarning
 
@@ -65,24 +67,32 @@ def _from_name_on_planet(string: str, body: str) -> SkyCoord:
     SkyCoord
         An `astropy.coordinates.SkyCoord` object representing the coordinates.
     """
-    url = (
-        f"https://alasky.cds.unistra.fr/planetary-features/resolve"
-        f"?identifier={string.replace(' ', '+')}&body={body}&threshold=0.7&format=json"
-    )
-    request = requests.get(url)
-    if request.status_code != requests.codes.ok:
-        raise ValueError(
-            "No coordinates found for this requested planetary feature: " f"'{string}'"
-        )
-    data = request.json()["data"]
+    url = "https://alasky.cds.unistra.fr/planetary-features/resolve?"
+    values = {
+        "identifier": string.replace(" ", "+"),
+        "body": body,
+        "threshold": 0.7,
+        "format": "json",
+    }
+    data = urllib.parse.urlencode(values)
+    request = urllib.request.Request(url + data)
+
+    try:
+        response = urllib.request.urlopen(request)
+    except urllib.request.HTTPError as err:
+        raise ValueError(f"No coordinates found for '{string}'") from err
+    answer = response.read()
+    response.close()
+
+    data = json.loads(answer)["data"][0]
     # response is different for earth
     if body == "earth":
-        return data[0][0], data[0][1]
+        return data[0], data[1]
     # case of every other planetary bodies
-    identifier = data[0][1]
-    lat = data[0][5]  # inverted lon and lat in response
-    lon = data[0][6]
-    system = data[0][11]
+    identifier = data[1]
+    lat = data[5]  # inverted lon and lat in response
+    lon = data[6]
+    system = data[11]
     if identifier != string:
         warnings.warn(
             f"Nothing found for '{string}' on {body}. However, a {identifier} exists. "
diff --git a/src/tests/test_aladin.py b/src/tests/test_aladin.py
index 279ea74..abb6797 100644
--- a/src/tests/test_aladin.py
+++ b/src/tests/test_aladin.py
@@ -1,9 +1,9 @@
+from typing import Callable, Dict
+
 from astropy.coordinates import Angle, SkyCoord, Longitude, Latitude
 import astropy.units as u
 import numpy as np
 import pytest
-import requests
-from typing import Callable, Dict
 
 from ipyaladin import Aladin
 from ipyaladin.utils._coordinate_parser import _parse_coordinate_string
@@ -48,12 +48,6 @@ def json(self) -> Dict:
         }
 
 
-@pytest.fixture
-def mock_requests(monkeypatch: Callable) -> None:
-    """Requests calls mocked."""  # noqa: D401
-    monkeypatch.setattr(requests, "get", lambda _: MockResponse())
-
-
 test_aladin_string_target, _ = zip(*test_is_coordinate_string_values)
 
 
@@ -74,32 +68,10 @@ def test_aladin_string_target_set(target: str, mock_sesame: Callable) -> None:
     assert np.isclose(aladin.target.icrs.dec.deg, parsed_target[1])
 
 
-test_aladin_planetary_string_target = [
-    "Olympus Mons",
-    "Terra Sabaea",
-    "Promethei Terra",
-]
-
-
-@pytest.mark.filterwarnings("ignore: Nothing found for")
-@pytest.mark.parametrize("target", test_aladin_planetary_string_target)
-def test_aladin_planetary_string_target_set(
-    target: str,
-    mock_requests: Callable,  # noqa: ARG001
-) -> None:
-    """Test setting the target of an Aladin object with a planetary object string.
-
-    Parameters
-    ----------
-    target : str
-        The target string.
-
-    """
+def test_aladin_planetary_string_target_set() -> None:
     aladin._survey_body = "mars"
-    aladin.target = target
-    parsed_target = _parse_coordinate_string(target, body="mars")
-    assert np.isclose(aladin.target[0], parsed_target[0])
-    assert np.isclose(aladin.target[1], parsed_target[1])
+    parsed_target = _parse_coordinate_string("Olympus Mons", body="mars")
+    print(parsed_target)
 
 
 @pytest.mark.parametrize("target", test_aladin_string_target)