diff --git a/cdsapi/api.py b/cdsapi/api.py
index 051186d..9e67c03 100644
--- a/cdsapi/api.py
+++ b/cdsapi/api.py
@@ -282,9 +282,9 @@ def __new__(cls, url=None, key=None, *args, **kwargs):
         if ":" in token:
             return super().__new__(cls)
 
-        import datapi.legacy_api_client
+        from ecmwf.datastores.legacy_client import LegacyClient
 
-        return super().__new__(datapi.legacy_api_client.LegacyApiClient)
+        return super().__new__(LegacyClient)
 
     def __init__(
         self,
diff --git a/setup.py b/setup.py
index e47c0af..27c5ceb 100644
--- a/setup.py
+++ b/setup.py
@@ -46,7 +46,7 @@ def read(fname):
     include_package_data=True,
     python_requires=">=3.8",
     install_requires=[
-        "datapi",
+        "ecmwf-datastores-client",
         "requests>=2.5.0",
         "tqdm",
     ],
diff --git a/tests/test_api.py b/tests/test_api.py
index 69e86f8..6445a09 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -1,6 +1,6 @@
 import os
 
-import datapi.legacy_api_client
+import ecmwf.datastores.legacy_client
 import pytest
 
 import cdsapi
@@ -33,7 +33,7 @@ def test_request():
         ),
         (
             "",
-            datapi.legacy_api_client.LegacyApiClient,
+            ecmwf.datastores.legacy_client.LegacyClient,
         ),
     ],
 )