diff --git a/binder/environment.yml b/binder/environment.yml
index 00be8de..a5957e1 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -7,9 +7,9 @@ dependencies:
 - hatchling =1.27.0
 - httpcore =1.0.7
 - jobflow =0.1.19
-- pyiron_base =0.11.11
+- pyiron_base =0.12.0
 - pygraphviz =1.14
 - aiida-workgraph =0.5.2
-- conda_subprocess =0.0.6
+- conda_subprocess =0.0.7
 - networkx =3.4.2
 - cwltool =3.1.20250110105449
diff --git a/python_workflow_definition/pyproject.toml b/python_workflow_definition/pyproject.toml
index 06727c2..b760b0b 100644
--- a/python_workflow_definition/pyproject.toml
+++ b/python_workflow_definition/pyproject.toml
@@ -28,10 +28,10 @@ jobflow = [
     "jobflow>=0.1.18,<=0.1.19",
 ]
 pyiron = [
-    "pyiron_base>=0.11.10,<=0.11.11",
+    "pyiron_base>=0.11.10,<=0.12.0",
 ]
 plot = [
     "pygraphviz>=1.10,<=1.14",
     "networkx>=2.8.8,<=3.4.2",
     "ipython>=7.33.0,<=9.0.2",
-]
\ No newline at end of file
+]
diff --git a/python_workflow_definition/src/python_workflow_definition/executorlib.py b/python_workflow_definition/src/python_workflow_definition/executorlib.py
index 807dfcf..3a494cd 100644
--- a/python_workflow_definition/src/python_workflow_definition/executorlib.py
+++ b/python_workflow_definition/src/python_workflow_definition/executorlib.py
@@ -34,7 +34,7 @@ def _get_value(result_dict: dict, nodes_new_dict: dict, link_dict: dict, exe: Ex
     if source_handle is None:
         return result
     else:
-        return exe.submit(fn=get_item, obj=result, key=source_handle)
+        return exe.submit(get_item, obj=result, key=source_handle)
 
 
 def load_workflow_json(file_name: str, exe: Executor):