diff --git a/aiida_aimall/__init__.py b/aiida_aimall/__init__.py
index 4cb5f7c..4714255 100644
--- a/aiida_aimall/__init__.py
+++ b/aiida_aimall/__init__.py
@@ -4,4 +4,4 @@
 A plugin to interface AIMAll with AiiDA
 """
 
-__version__ = "0.6.7"
+__version__ = "0.6.8"
diff --git a/aiida_aimall/workchains.py b/aiida_aimall/workchains.py
index 8a693d4..945edbf 100644
--- a/aiida_aimall/workchains.py
+++ b/aiida_aimall/workchains.py
@@ -525,6 +525,7 @@ def aim(self):
         # if "frag_label" in self.inputs:
         #     builder.frag_label = self.inputs.frag_label
         builder.metadata.options.parser_name = "aimall.group"
+        builder.metadata.options.resources = {"num_machines": 1, "tot_num_mpiprocs": 2}
         num_atoms = len(
             self.ctx.prereor_aim.get_outgoing()
             .get_node_by_label("rotated_structure")