diff --git a/pyproject.toml b/pyproject.toml
index 98fcefa..127451c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ classifiers = [
 dependencies = [
     "anyio >=3.6.2,<5",
     "aiosqlite >=0.18.0,<1",
-    "pycrdt >=0.7.0,<0.8.0",
+    "pycrdt >=0.8.1,<0.9.0",
 ]
 
 [project.optional-dependencies]
diff --git a/tests/test_pycrdt_yjs.py b/tests/test_pycrdt_yjs.py
index 19d5e2a..13924fd 100644
--- a/tests/test_pycrdt_yjs.py
+++ b/tests/test_pycrdt_yjs.py
@@ -1,5 +1,3 @@
-import json
-
 import pytest
 from anyio import Event, create_task_group, move_on_after, sleep
 from pycrdt import Array, Doc, Map
@@ -73,5 +71,5 @@ async def test_pycrdt_yjs_1(yws_server, yjs_client):
     await ytest.clock_run()
     ydoc["cells"] = ycells = Array()
     ydoc["state"] = ystate = Map()
-    assert json.loads(str(ycells)) == [{"metadata": {"foo": "bar"}, "source": "1 + 2"}]
-    assert dict(ystate) == {"state": {"dirty": False}}
+    assert ycells.to_py() == [{"metadata": {"foo": "bar"}, "source": "1 + 2"}]
+    assert ystate.to_py() == {"state": {"dirty": False}}