diff --git a/oapen-engine/src/tasks/config.py b/oapen-engine/src/tasks/config.py
index abd68d0..f45757e 100644
--- a/oapen-engine/src/tasks/config.py
+++ b/oapen-engine/src/tasks/config.py
@@ -1,7 +1,7 @@
 ITEMS_PER_IMPORT_THREAD = 25
 
 # Max thread count for data ingest
-IO_MAX_WORKERS = 5
+IO_MAX_WORKERS = 1
 
 # Delay for submitting new API call thread
 HARVEST_THREAD_SPAWN_DELAY = 5