diff --git a/backend/workflow_executor.py b/backend/workflow_executor.py
index 6ad0c94..0677e05 100644
--- a/backend/workflow_executor.py
+++ b/backend/workflow_executor.py
@@ -880,6 +880,11 @@ def save_execution_state(
             INSERT INTO workflow_executions
             (id, workflow_id, profile_id, status, node_states, execution_log, started_at, completed_at)
             VALUES (%s, %s, %s, %s, %s, %s, %s, %s)
+            ON CONFLICT (id) DO UPDATE SET
+                status = EXCLUDED.status,
+                node_states = EXCLUDED.node_states,
+                execution_log = EXCLUDED.execution_log,
+                completed_at = EXCLUDED.completed_at
         """, (
             execution_id,
             workflow_id,