diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5a057b48..8aa8ac20 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -29,6 +29,7 @@ jobs:
         run: |
           pip install "jupyterlab>=4.0.0,<5"
           pip install -e .
+          pip install https://github.com/davidbrochart/pycrdt-websocket/archive/sqlite-anyio.zip
           jlpm
 
       - name: Run pre-commit
@@ -70,6 +71,7 @@ jobs:
         run: |
           pip install "jupyterlab>=4.0.0,<5"
           pip install -e .
+          pip install https://github.com/davidbrochart/pycrdt-websocket/archive/sqlite-anyio.zip
           jlpm
 
       - name: Run Tests
@@ -105,6 +107,7 @@ jobs:
         run: |
           python -m pip install "jupyterlab>=4.0.0,<5"
           pip install -e ".[test]" codecov
+          pip install https://github.com/davidbrochart/pycrdt-websocket/archive/sqlite-anyio.zip
 
       - name: List installed packages
         run: |
@@ -176,6 +179,7 @@ jobs:
       - name: Install the Python dependencies
         run: |
           pip install -e ".[test]"
+          pip install https://github.com/davidbrochart/pycrdt-websocket/archive/sqlite-anyio.zip
 
       - name: List installed packages
         run: |
@@ -218,6 +222,7 @@ jobs:
           cd test
           python -m pip install "jupyterlab>=4.0.0,<5"
           python -m pip install ".[test]"
+          python -m pip install https://github.com/davidbrochart/pycrdt-websocket/archive/sqlite-anyio.zip
           echo "::endgroup::"
 
       - name: Run Test
diff --git a/pyproject.toml b/pyproject.toml
index f7b3278e..f11eeb03 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ classifiers = [
 dependencies = [
     "jupyter_server>=2.0.0,<3.0.0",
     "jupyter_ydoc>=2.0.0,<3.0.0",
-    "pycrdt-websocket>=0.12.5,<0.13.0",
+    #"pycrdt-websocket>=0.12.5,<0.13.0",
     "jupyter_events>=0.10.0",
     "jupyter_server_fileid>=0.7.0,<1",
     "jsonschema>=4.18.0"
diff --git a/tests/test_random.py b/tests/test_random.py
index 06c2baf5..fbe6290f 100644
--- a/tests/test_random.py
+++ b/tests/test_random.py
@@ -58,8 +58,8 @@ async def connect(
                         stop_ready.set()
                         await do_stop.wait()
                         # allow some time for last messages to arrive through websocket
-                        # FIXME: how long? 1 second is arbitrary, maybe not enough
-                        await sleep(1)
+                        # FIXME: how long?
+                        await sleep(10)
                         stop_done.set()
                         return
                     await sleep(uniform(0, change_max_delay))