diff --git a/pyproject.toml b/pyproject.toml
index 29f4904..6f032b5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,9 +21,12 @@ dependencies = [
     "pyopenephys>=1.2.0",
     "spikeinterface[full,widgets]>=0.101.2",
     "scikit-learn>=1.5.0",
-    "pynwb>=2.8.0",
+    "pynwb>=2.8.0,<3",
+    "hdmf<3.14.5",
     "ipywidgets>=8.1.1",
     "nwbwidgets>=0.11.3",
+    "pyarrow",
+    "ipython_genutils",
     "tbb>=2021.11.0; platform_system != 'Darwin'",
     "pynapple>=0.5.1",
     "lxml",
diff --git a/src/expipe_plugin_cinpla/tools/project_loader.py b/src/expipe_plugin_cinpla/tools/project_loader.py
index f160b57..081c208 100644
--- a/src/expipe_plugin_cinpla/tools/project_loader.py
+++ b/src/expipe_plugin_cinpla/tools/project_loader.py
@@ -60,7 +60,7 @@ def __init__(self, project_path):
         self._info["project"] = self._config["project"]
         self._info["project_path"] = self._project_path
         self._info["metadata_path"] = self._metadata_path
-        self._info["probe_path"] = self._config["probe_path"]
+        self._info["probe_path"] = self._config.get("probe_path")
 
     def _ipython_display_(self):
         """