diff --git a/src/workos/_base_client.py b/src/workos/_base_client.py
index 7c6f7e64..4ace8d78 100644
--- a/src/workos/_base_client.py
+++ b/src/workos/_base_client.py
@@ -679,6 +679,7 @@ def request_page(
 
         def _fetch(*, after: Optional[str] = None) -> SyncPage[D]:
             next_params = {**(params or {}), "after": after}
+            next_params.pop("before", None)
             return self.request_page(
                 method=method,
                 path=path,
@@ -922,6 +923,7 @@ async def request_page(
 
         async def _fetch(*, after: Optional[str] = None) -> AsyncPage[D]:
             next_params = {**(params or {}), "after": after}
+            next_params.pop("before", None)
             return await self.request_page(
                 method=method,
                 path=path,
diff --git a/tests/test_pagination.py b/tests/test_pagination.py
index 6d7fcdb1..29e49bbe 100644
--- a/tests/test_pagination.py
+++ b/tests/test_pagination.py
@@ -111,6 +111,53 @@ async def _fetch(after=None):
 class TestPaginationHTTPIntegration:
     """Integration test verifying auto_paging_iter fetches multiple pages via httpx."""
 
+    def test_forward_pagination_clears_before(self, workos, httpx_mock):
+        httpx_mock.add_response(
+            json={"data": [{"id": "1"}], "list_metadata": {"after": "next"}}
+        )
+        httpx_mock.add_response(json={"data": [{"id": "2"}], "list_metadata": {}})
+        params = {"before": "initial", "limit": 1, "organization_id": "org_1"}
+        page = workos.request_page("GET", ["items"], model=FakeItem, params=params)
+        assert [item.id for item in page] == ["1", "2"]
+        requests = httpx_mock.get_requests()
+        assert dict(requests[0].url.params) == {
+            "before": "initial",
+            "limit": "1",
+            "organization_id": "org_1",
+        }
+        assert dict(requests[1].url.params) == {
+            "after": "next",
+            "limit": "1",
+            "organization_id": "org_1",
+        }
+        assert params == {"before": "initial", "limit": 1, "organization_id": "org_1"}
+
+    @pytest.mark.asyncio
+    async def test_async_forward_pagination_clears_before(
+        self, async_workos, httpx_mock
+    ):
+        httpx_mock.add_response(
+            json={"data": [{"id": "1"}], "list_metadata": {"after": "next"}}
+        )
+        httpx_mock.add_response(json={"data": [{"id": "2"}], "list_metadata": {}})
+        params = {"before": "initial", "limit": 1, "organization_id": "org_1"}
+        page = await async_workos.request_page(
+            "GET", ["items"], model=FakeItem, params=params
+        )
+        assert [item.id async for item in page] == ["1", "2"]
+        requests = httpx_mock.get_requests()
+        assert dict(requests[0].url.params) == {
+            "before": "initial",
+            "limit": "1",
+            "organization_id": "org_1",
+        }
+        assert dict(requests[1].url.params) == {
+            "after": "next",
+            "limit": "1",
+            "organization_id": "org_1",
+        }
+        assert params == {"before": "initial", "limit": 1, "organization_id": "org_1"}
+
     def test_auto_paging_iter_fetches_two_pages(self, workos, httpx_mock):
         org_base = {
             "object": "organization",