diff --git a/strix/interface/tui.py b/strix/interface/tui.py
index 58fa120d..21c7b96e 100644
--- a/strix/interface/tui.py
+++ b/strix/interface/tui.py
@@ -471,7 +471,7 @@ def _update_ui_from_tracer(self) -> None:
             return
 
         agent_updates = False
-        for agent_id, agent_data in self.tracer.agents.items():
+        for agent_id, agent_data in list(self.tracer.agents.items()):
             if agent_id not in self._displayed_agents:
                 self._add_agent_node(agent_data)
                 self._displayed_agents.add(agent_id)
@@ -749,7 +749,7 @@ def _stop_dot_animation(self) -> None:
     def _animate_dots(self) -> None:
         has_active_agents = False
 
-        for agent_id, agent_data in self.tracer.agents.items():
+        for agent_id, agent_data in list(self.tracer.agents.items()):
             status = agent_data.get("status", "running")
             if status in ["running", "waiting"]:
                 has_active_agents = True
@@ -792,7 +792,7 @@ def _gather_agent_events(self, agent_id: str) -> list[dict[str, Any]]:
                 "id": f"tool_{exec_id}",
                 "data": tool_data,
             }
-            for exec_id, tool_data in self.tracer.tool_executions.items()
+            for exec_id, tool_data in list(self.tracer.tool_executions.items())
             if tool_data.get("agent_id") == agent_id
         ]
 
@@ -958,7 +958,7 @@ def _copy_node_under(self, node_to_copy: TreeNode, new_parent: TreeNode) -> None
     def _reorganize_orphaned_agents(self, new_parent_id: str) -> None:
         agents_to_move = []
 
-        for agent_id, agent_data in self.tracer.agents.items():
+        for agent_id, agent_data in list(self.tracer.agents.items()):
             if (
                 agent_data.get("parent_id") == new_parent_id
                 and agent_id in self.agent_nodes
diff --git a/strix/telemetry/tracer.py b/strix/telemetry/tracer.py
index 6da30d53..63781bc3 100644
--- a/strix/telemetry/tracer.py
+++ b/strix/telemetry/tracer.py
@@ -291,14 +291,14 @@ def _calculate_duration(self) -> float:
     def get_agent_tools(self, agent_id: str) -> list[dict[str, Any]]:
         return [
             exec_data
-            for exec_data in self.tool_executions.values()
+            for exec_data in list(self.tool_executions.values())
             if exec_data.get("agent_id") == agent_id
         ]
 
     def get_real_tool_count(self) -> int:
         return sum(
             1
-            for exec_data in self.tool_executions.values()
+            for exec_data in list(self.tool_executions.values())
             if exec_data.get("tool_name") not in ["scan_start_info", "subagent_start_info"]
         )