diff --git a/lib/queue/queue.py b/lib/queue/queue.py
index f54a286f..464bc1ed 100644
--- a/lib/queue/queue.py
+++ b/lib/queue/queue.py
@@ -1,6 +1,7 @@
 import json
 from typing import List, Dict, Tuple
 import os
+from threading import Lock
 
 import boto3
 import botocore
@@ -17,6 +18,7 @@ def __init__(self):
         """
         Start a specific queue - must pass input_queue_name.
         """
+        self.sqs_lock = Lock()
         self.sqs = self.get_sqs()
 
     @staticmethod
@@ -111,14 +113,16 @@ def get_sqs(self) -> boto3.resources.base.ServiceResource:
         deploy_env = get_environment_setting("DEPLOY_ENV")
         if deploy_env == "local":
             logger.info(f"Using ElasticMQ Interface")
-            return boto3.resource('sqs',
-                                  region_name=(get_environment_setting("AWS_DEFAULT_REGION") or 'eu-central-1'),
-                                  endpoint_url=(get_environment_setting("ELASTICMQ_URI") or 'http://presto-elasticmq:9324'),
-                                  aws_access_key_id=(get_environment_setting("AWS_ACCESS_KEY_ID") or 'x'),
-                                  aws_secret_access_key=(get_environment_setting("AWS_SECRET_ACCESS_KEY") or 'x'))
+            with self.sqs_lock:
+                return boto3.resource('sqs',
+                                      region_name=(get_environment_setting("AWS_DEFAULT_REGION") or 'eu-central-1'),
+                                      endpoint_url=(get_environment_setting("ELASTICMQ_URI") or 'http://presto-elasticmq:9324'),
+                                      aws_access_key_id=(get_environment_setting("AWS_ACCESS_KEY_ID") or 'x'),
+                                      aws_secret_access_key=(get_environment_setting("AWS_SECRET_ACCESS_KEY") or 'x'))
         else:
             logger.info(f"Using SQS Interface")
-            return boto3.resource('sqs', region_name=get_environment_setting("AWS_DEFAULT_REGION"))
+            with self.sqs_lock:
+                return boto3.resource('sqs', region_name=get_environment_setting("AWS_DEFAULT_REGION"))
 
     def group_deletions(self, messages_with_queues: List[Tuple[schemas.Message, boto3.resources.base.ServiceResource]]) -> Dict[boto3.resources.base.ServiceResource, List[schemas.Message]]:
         """