diff --git a/icon_service_base/ionizer_interface/rpc_interface.py b/icon_service_base/ionizer_interface/rpc_interface.py
index 0b1a513..354d3cc 100644
--- a/icon_service_base/ionizer_interface/rpc_interface.py
+++ b/icon_service_base/ionizer_interface/rpc_interface.py
@@ -22,7 +22,7 @@ class RPCInterface:
         return self._service.__class__.__name__
 
     async def get_props(self) -> dict[str, Any]:
-        return self._service.serialize()
+        return self._service.serialize()["value"]
 
     async def get_param(self, full_access_path: str) -> Any:
         """Returns the value of the parameter given by the full_access_path.
diff --git a/pyproject.toml b/pyproject.toml
index 7723c6c..0c591a1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ build-backend = "poetry.core.masonry.api"
 [tool.poetry.dependencies]
 python = "^3.10"
 confz = "^2.0.0"
-pydase = "*"
+pydase = ">=0.6.0"
 
 # optional dependencies
 tiqi-rpc = { git = "ssh://git@gitlab.phys.ethz.ch/tiqi-projects/tiqi-rpc-python.git", optional = true }