diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b9fa616..a5aafd6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,12 +22,11 @@ jobs:
       matrix:
         python: ['3.10', '3.11']
         django: ['3.2', '4.1', '4.2']
-        zdsclient: ['1.0', '2.0']
         exclude:
           - python: '3.11'
             django: '3.2'
 
-    name: Run the test suite (Python ${{ matrix.python }}, Django ${{ matrix.django }}, zds-client ${{ matrix.zdsclient }})
+    name: Run the test suite (Python ${{ matrix.python }}, Django ${{ matrix.django }}
 
     services:
       postgres:
@@ -54,13 +53,12 @@ jobs:
 
       - name: Run tests
         run: |
-          export TOXENV=py${PYTHON_VERSION/./}-django${DJANGO/./}-zdsclient${ZDS_CLIENT/./}
+          export TOXENV=py${PYTHON_VERSION/./}-django${DJANGO/./}
           tox
-          codecov -e TOXENV,DJANGO,ZDS_CLIENT --file reports/coverage-${TOXENV}.xml
+          codecov -e TOXENV,DJANGO --file reports/coverage-${TOXENV}.xml
         env:
           PYTHON_VERSION: ${{ matrix.python }}
           DJANGO: ${{ matrix.django }}
-          ZDS_CLIENT: ${{ matrix.zdsclient }}
 
   publish:
     name: Publish package to PyPI
diff --git a/setup.cfg b/setup.cfg
index 059767a..4bc8081 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -38,7 +38,7 @@ install_requires =
     django>=3.2.0
     django-relativedelta>=2.0.0
     django-solo
-    gemma-zds-client>=1.0.1
+    gemma-zds-client>=2.0.0
     django-simple-certmanager>=1.4.1
     requests
     pyopenssl
diff --git a/tox.ini b/tox.ini
index 3abe578..df31824 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,8 +1,7 @@
 [tox]
 envlist =
-    py37-django32-zdsclient{10,20}
-    py{310,311}-django{32,41,42}-zdsclient{10,20}
-    py311-django{41,42}-zdsclient{10,20}
+    py{310,311}-django{32,41,42}
+    py311-django{41,42}
     isort
     black
     flake8
@@ -19,9 +18,6 @@ DJANGO =
     3.2: django32
     4.1: django41
     4.2: django42
-ZDS_CLIENT =
-    1.0: zdsclient10
-    2.0: zdsclient20
 
 [testenv]
 setenv =
@@ -42,8 +38,6 @@ deps =
   django32: Django~=3.2.0
   django41: Django~=4.1.0
   django42: Django~=4.2.0
-  zdsclient10: gemma-zds-client~=1.0.0
-  zdsclient20: gemma-zds-client~=2.0.0
 commands =
   py.test -s tests \
    --junitxml=reports/junit.xml \
diff --git a/zgw_consumers/legacy/client.py b/zgw_consumers/legacy/client.py
index a56841e..a6227c3 100644
--- a/zgw_consumers/legacy/client.py
+++ b/zgw_consumers/legacy/client.py
@@ -6,7 +6,6 @@
 from django.utils.module_loading import import_string
 
 import yaml
-import zds_client
 from zds_client import Client
 from zds_client.oas import schema_fetcher
 
@@ -14,8 +13,6 @@
 
 logger = logging.getLogger(__name__)
 
-IS_OLD_ZDS_CLIENT = zds_client.__version__ < "2.0.0"
-
 Object = Dict[str, Any]
 
 
@@ -67,28 +64,17 @@ def fetch_schema(self) -> None:
             logger.info("Fetching schema at '%s'", url)
             self._schema = schema_fetcher.fetch(url, {"v": "3"})
 
-    def pre_request(
-        self, method: str, url: str, kwargs: Optional[dict] = None, **old_kwargs
-    ):
+    def pre_request(self, method: str, url: str, kwargs: Optional[dict] = None):
         """
         Add authorization header to requests for APIs without jwt.
         """
         kwargs = kwargs or {}
-        if old_kwargs:
-            warnings.warn(
-                "Keyword argument unpacking is removed in zds-client 2.0.",
-                DeprecationWarning,
-            )
-            kwargs.update(old_kwargs)
 
         if not self.auth and self.auth_value:
             headers = kwargs.get("headers", {})
             headers.update(self.auth_value)
 
-        if IS_OLD_ZDS_CLIENT:
-            super_kwargs = kwargs
-        else:
-            super_kwargs = {"kwargs": kwargs}
+        super_kwargs = {"kwargs": kwargs}
 
         return super().pre_request(method, url, **super_kwargs)
 
diff --git a/zgw_consumers/models/services.py b/zgw_consumers/models/services.py
index 8e423f3..fbe45c2 100644
--- a/zgw_consumers/models/services.py
+++ b/zgw_consumers/models/services.py
@@ -140,17 +140,7 @@ def build_client(self, **claims):
             api_root = api_root.replace(self.api_root, self.nlx, 1)
 
         Client = get_client_class()
-        # legacy flow
-        if hasattr(Client, "from_url"):
-            warnings.warn(
-                "Support for zds-client < 2.0 is deprecated", DeprecationWarning
-            )
-            dummy_detail_url = f"{api_root}dummy/{_uuid}"
-            client = Client.from_url(dummy_detail_url)
-            client.schema_url = self.oas
-            client.schema_file = self.oas_file
-        else:  # 2.0.0+
-            client = Client(api_root, schema_url=self.oas, schema_file=self.oas_file)
+        client = Client(api_root, schema_url=self.oas, schema_file=self.oas_file)
 
         if self.server_certificate:
             client.server_certificate_path = (