diff --git a/poetry.lock b/poetry.lock
index 4582b3b7..860dfc96 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -455,14 +455,14 @@ files = [
 
 [[package]]
 name = "beautifulsoup4"
-version = "4.11.2"
+version = "4.12.0"
 description = "Screen-scraping library"
 category = "dev"
 optional = false
 python-versions = ">=3.6.0"
 files = [
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+    {file = "beautifulsoup4-4.12.0-py3-none-any.whl", hash = "sha256:2130a5ad7f513200fae61a17abb5e338ca980fa28c439c0571014bc0217e9591"},
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 [package.dependencies]
@@ -1456,14 +1456,14 @@ tests = ["mypy (==0.971)", "pylint (==2.15.0)", "pytest (==7.2.0)", "pytest-cov
 
 [[package]]
 name = "dvc-render"
-version = "0.3.0"
+version = "0.3.1"
 description = "DVC render"
 category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
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+    {file = "dvc-render-0.3.1.tar.gz", hash = "sha256:af718d813017db9b2e688576f33a8ce27398949620340894afae4f1023f0e07a"},
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 [package.extras]
@@ -1628,14 +1628,14 @@ psutil = ">=5.9.0"
 
 [[package]]
 name = "fonttools"
-version = "4.39.1"
+version = "4.39.2"
 description = "Tools to manipulate font files"
 category = "main"
 optional = false
 python-versions = ">=3.8"
 files = [
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+    {file = "fonttools-4.39.2.zip", hash = "sha256:e2d9f10337c9e3b17f9bce17a60a16a885a7d23b59b7f45ce07ea643e5580439"},
 ]
 
 [package.extras]
@@ -1884,14 +1884,14 @@ packaging = "*"
 
 [[package]]
 name = "identify"
-version = "2.5.20"
+version = "2.5.21"
 description = "File identification library for Python"
 category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
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+    {file = "identify-2.5.21.tar.gz", hash = "sha256:7671a05ef9cfaf8ff63b15d45a91a1147a03aaccb2976d4e9bd047cbbc508471"},
 ]
 
 [package.extras]
@@ -1923,14 +1923,14 @@ files = [
 
 [[package]]
 name = "importlib-metadata"
-version = "6.0.0"
+version = "6.1.0"
 description = "Read metadata from Python packages"
 category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
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 [package.dependencies]
@@ -2233,19 +2233,19 @@ test = ["codecov", "coverage", "ipykernel (>=6.14)", "mypy", "paramiko", "pre-co
 
 [[package]]
 name = "jupyter-core"
-version = "5.2.0"
+version = "5.3.0"
 description = "Jupyter core package. A base package on which Jupyter projects rely."
 category = "dev"
 optional = false
 python-versions = ">=3.8"
 files = [
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 [package.dependencies]
 platformdirs = ">=2.5"
-pywin32 = {version = ">=1.0", markers = "sys_platform == \"win32\" and platform_python_implementation != \"PyPy\""}
+pywin32 = {version = ">=300", markers = "sys_platform == \"win32\" and platform_python_implementation != \"PyPy\""}
 traitlets = ">=5.3"
 
 [package.extras]
@@ -2279,14 +2279,14 @@ test = ["click", "coverage", "pre-commit", "pytest (>=7.0)", "pytest-asyncio (>=
 
 [[package]]
 name = "jupyter-server"
-version = "2.4.0"
+version = "2.5.0"
 description = "The backend—i.e. core services, APIs, and REST endpoints—to Jupyter web applications."
 category = "dev"
 optional = false
 python-versions = ">=3.8"
 files = [
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 ]
 
 [package.dependencies]
@@ -2355,14 +2355,14 @@ test = ["coverage", "jupyter-server (>=2.0.0)", "pytest (>=7.0)", "pytest-cov",
 
 [[package]]
 name = "jupyter-server-ydoc"
-version = "0.6.1"
+version = "0.8.0"
 description = "A Jupyter Server Extension Providing Y Documents."
 category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "jupyter_server_ydoc-0.6.1-py3-none-any.whl", hash = "sha256:18275ff1ce7e93bbda2301ca066273b3951fc50b0d9c8fc33788374134ad7920"},
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+    {file = "jupyter_server_ydoc-0.8.0-py3-none-any.whl", hash = "sha256:969a3a1a77ed4e99487d60a74048dc9fa7d3b0dcd32e60885d835bbf7ba7be11"},
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 ]
 
 [package.dependencies]
@@ -2395,14 +2395,14 @@ test = ["pre-commit", "pytest", "pytest-asyncio", "websockets (>=10.0)", "ypy-we
 
 [[package]]
 name = "jupyterlab"
-version = "3.6.1"
+version = "3.6.2"
 description = "JupyterLab computational environment"
 category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
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 [package.dependencies]
@@ -2410,8 +2410,8 @@ ipython = "*"
 jinja2 = ">=2.1"
 jupyter-core = "*"
 jupyter-server = ">=1.16.0,<3"
-jupyter-server-ydoc = ">=0.6.0,<0.7.0"
-jupyter-ydoc = ">=0.2.2,<0.3.0"
+jupyter-server-ydoc = ">=0.8.0,<0.9.0"
+jupyter-ydoc = ">=0.2.3,<0.3.0"
 jupyterlab-server = ">=2.19,<3.0"
 nbclassic = "*"
 notebook = "<7"
@@ -4054,89 +4054,89 @@ files = [
 
 [[package]]
 name = "pyzmq"
-version = "25.0.1"
+version = "25.0.2"
 description = "Python bindings for 0MQ"
 category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
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+    {file = "pyzmq-25.0.2.tar.gz", hash = "sha256:6b8c1bbb70e868dc88801aa532cae6bd4e3b5233784692b786f17ad2962e5149"},
 ]
 
 [package.dependencies]
@@ -5214,14 +5214,14 @@ testing = ["big-O", "flake8 (<5)", "jaraco.functools", "jaraco.itertools", "more
 
 [[package]]
 name = "znflow"
-version = "0.1.3"
+version = "0.1.4"
 description = ""
 category = "main"
 optional = false
 python-versions = ">=3.8,<4.0"
 files = [
-    {file = "znflow-0.1.3-py3-none-any.whl", hash = "sha256:96c5085fdd7935900b8beb69fba8c176da596dfaf8d150c47297011bd85ab00e"},
-    {file = "znflow-0.1.3.tar.gz", hash = "sha256:9ec55911ae6155ef995c458da31cf68517ceb5cf72d63f679947109180e0131a"},
+    {file = "znflow-0.1.4-py3-none-any.whl", hash = "sha256:cd90bf5c03161eed5790b6f8efc967d76322a04cf9551be24444f700cf846ebf"},
+    {file = "znflow-0.1.4.tar.gz", hash = "sha256:6157997dfcd138837616ee9acb88b231a51bb7515a63bdfc2a1728d6afbe7c5e"},
 ]
 
 [package.dependencies]
@@ -5258,4 +5258,4 @@ files = [
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.8,<4.0.0"
-content-hash = "11e407c7611b42358c4ebcc75fc12642c34dd60e8c7923dc577a584d8475b239"
+content-hash = "16fdfb76cf4c68f77eb4dd14be331687d468a979f768bde118314121d675f8e6"
diff --git a/pyproject.toml b/pyproject.toml
index f07b44df..dbb65cf5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "ZnTrack"
-version = "0.6.0a1"
+version = "0.6.0a2"
 description = "Create, Run and Benchmark DVC Pipelines in Python"
 authors = ["zincwarecode <zincwarecode@gmail.com>"]
 license = "Apache-2.0"
@@ -10,7 +10,7 @@ readme = "README.md"
 
 [tool.poetry.dependencies]
 python = ">=3.8,<4.0.0"
-dvc = "^2.47.0"
+dvc = "^2.50.0"
 pyyaml = "^6.0"
 tqdm = "^4.64.0"
 pandas = "^1.4.3"
@@ -18,7 +18,7 @@ typer = "^0.7.0"
 
 dot4dict = "^0.1.1"
 zninit = "^0.1.9"
-znflow = "^0.1.3"
+znflow = "^0.1.4"
 znjson = "^0.2.2"
 
 
diff --git a/tests/integration/test_none_values.py b/tests/integration/test_none_values.py
index 24f6b06a..14f2b6da 100644
--- a/tests/integration/test_none_values.py
+++ b/tests/integration/test_none_values.py
@@ -62,3 +62,15 @@ def test_from_dvc_deps(proj_path, eager):
         node.load()
 
     assert node.result == "Hello World"
+
+
+class EmptyNodesNode(zntrack.Node):
+    nodes = zntrack.zn.nodes(None)
+
+    def run(self):
+        pass
+
+
+def test_EmptyNode(proj_path):
+    with zntrack.Project() as project:
+        node = EmptyNodesNode()
diff --git a/tests/integration/test_zn_nodes2.py b/tests/integration/test_zn_nodes2.py
index 7d58df50..00961b19 100644
--- a/tests/integration/test_zn_nodes2.py
+++ b/tests/integration/test_zn_nodes2.py
@@ -26,7 +26,7 @@ class ExampleNodeLst(Node):
     outs = zn.outs()
 
     def run(self):
-        self.outs = sum([p.param1 for p in self.params])
+        self.outs = sum(p.param1 for p in self.params)
 
 
 @pytest.mark.parametrize("eager", [True, False])
diff --git a/tests/test_zntrack.py b/tests/test_zntrack.py
index 5793b69a..11c29008 100644
--- a/tests/test_zntrack.py
+++ b/tests/test_zntrack.py
@@ -4,4 +4,4 @@
 
 def test_version():
     """Test 'ZnTrack' version."""
-    assert __version__ == "0.6.0a1"
+    assert __version__ == "0.6.0a2"
diff --git a/zntrack/fields/zn/__init__.py b/zntrack/fields/zn/__init__.py
index 0f2867b4..dbfd760a 100644
--- a/zntrack/fields/zn/__init__.py
+++ b/zntrack/fields/zn/__init__.py
@@ -10,6 +10,7 @@
 import znflow.utils
 import zninit
 import znjson
+from znflow import handler
 
 from zntrack.fields.field import Field, FieldGroup, LazyField
 from zntrack.utils import LazyOption, module_handler, update_key_val
@@ -325,7 +326,7 @@ def get_data(self, instance: "Node") -> any:
         # Up until here we have connection objects. Now we need
         # to resolve them to Nodes. The Nodes, as in 'connection.instance'
         #  are already loaded by the ZnDecoder.
-        return znflow.graph._UpdateConnectors()(value)
+        return handler.UpdateConnectors()(value)
 
     def get_stage_add_argument(self, instance) -> typing.List[tuple]:
         """Get the dvc command for this field."""
@@ -355,6 +356,9 @@ class NodeField(Dependency):
 
     def __set__(self, instance, value):
         """Disbale the _graph_ in the value 'Node'."""
+        if value is None:
+            return super().__set__(instance, value)
+
         for entry in value if isinstance(value, (list, tuple)) else [value]:
             if hasattr(entry, "_graph_"):
                 entry._graph_ = None
@@ -375,7 +379,7 @@ def save(self, instance: "Node"):
             value = getattr(instance, self.name)
         except AttributeError:
             return
-        if value is LazyOption:
+        if value in [LazyOption, None]:
             return
         if not isinstance(value, (list, tuple)):
             value = [value]
@@ -386,8 +390,11 @@ def save(self, instance: "Node"):
 
     def get_optional_dvc_cmd(self, instance: "Node") -> typing.List[list]:
         """Get the dvc command for this field."""
-        names = self.get_node_names(instance)
         nodes = instance.__dict__[self.name]
+        if nodes is None:
+            return []
+
+        names = self.get_node_names(instance)
         if not isinstance(nodes, (list, tuple)):
             nodes = [nodes]
 
diff --git a/zntrack/project/zntrack_project.py b/zntrack/project/zntrack_project.py
index aaa0cb6f..aa36b9a1 100644
--- a/zntrack/project/zntrack_project.py
+++ b/zntrack/project/zntrack_project.py
@@ -10,7 +10,7 @@
 import git
 import yaml
 import znflow
-from znflow.graph import _UpdateConnectors
+from znflow.handler import UpdateConnectors
 
 from zntrack.core.node import Node, get_dvc_cmd
 from zntrack.utils import capture_run_dvc_cmd, run_dvc_cmd
@@ -48,7 +48,7 @@ def run(
             if eager:
                 # update connectors
                 log.info(f"Running node {node}")
-                self._update_node_attributes(node, _UpdateConnectors())
+                self._update_node_attributes(node, UpdateConnectors())
                 node.run()
                 if save:
                     node.save()