diff --git a/CHANGELOG.md b/CHANGELOG.md
index 32ae18bbf..f3ce81604 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [7.1.1]
+### Changed
+- Reduced `start_execution_manager` batch size from 600 jobs to 500 jobs. Fixes [#2241](https://github.com/ASFHyP3/hyp3/issues/2241).
+
 ## [7.1.0]
 ### Added
 - A `hyp3-its-live-test` deployment to [`deploy-enterprise-test.yml`](.github/workflows/deploy-enterprise-test.yml) for ITS_LIVE testing in preparation for some significant ITS_LIVE project development
diff --git a/apps/start-execution-manager/src/start_execution_manager.py b/apps/start-execution-manager/src/start_execution_manager.py
index e74911a37..0babf94ba 100644
--- a/apps/start-execution-manager/src/start_execution_manager.py
+++ b/apps/start-execution-manager/src/start_execution_manager.py
@@ -25,10 +25,10 @@ def lambda_handler(event, context) -> None:
     worker_function_arn = os.environ['START_EXECUTION_WORKER_ARN']
     logger.info(f'Worker function ARN: {worker_function_arn}')
 
-    pending_jobs = dynamo.jobs.get_jobs_waiting_for_execution(limit=600)
+    pending_jobs = dynamo.jobs.get_jobs_waiting_for_execution(limit=500)
     logger.info(f'Got {len(pending_jobs)} pending jobs')
 
-    batch_size = 300
+    batch_size = 250
     for i in range(0, len(pending_jobs), batch_size):
         jobs = pending_jobs[i:i + batch_size]
         logger.info(f'Invoking worker for {len(jobs)} jobs')
diff --git a/tests/test_start_execution_manager.py b/tests/test_start_execution_manager.py
index f78603a8d..fb6768005 100644
--- a/tests/test_start_execution_manager.py
+++ b/tests/test_start_execution_manager.py
@@ -53,41 +53,41 @@ def test_invoke_worker():
         )
 
 
-def test_lambda_handler_600_jobs():
+def test_lambda_handler_500_jobs():
     with patch('dynamo.jobs.get_jobs_waiting_for_execution') as mock_get_jobs_waiting_for_execution, \
             patch('start_execution_manager.invoke_worker') as mock_invoke_worker, \
             patch.dict(os.environ, {'START_EXECUTION_WORKER_ARN': 'test-worker-function-arn'}, clear=True):
-        mock_jobs = list(range(600))
+        mock_jobs = list(range(500))
         mock_get_jobs_waiting_for_execution.return_value = mock_jobs
 
         mock_invoke_worker.return_value = {'StatusCode': None}
 
         start_execution_manager.lambda_handler(None, None)
 
-        mock_get_jobs_waiting_for_execution.assert_called_once_with(limit=600)
+        mock_get_jobs_waiting_for_execution.assert_called_once_with(limit=500)
 
         assert mock_invoke_worker.mock_calls == [
-            call('test-worker-function-arn', mock_jobs[0:300]),
-            call('test-worker-function-arn', mock_jobs[300:600]),
+            call('test-worker-function-arn', mock_jobs[0:250]),
+            call('test-worker-function-arn', mock_jobs[250:500]),
         ]
 
 
-def test_lambda_handler_500_jobs():
+def test_lambda_handler_400_jobs():
     with patch('dynamo.jobs.get_jobs_waiting_for_execution') as mock_get_jobs_waiting_for_execution, \
             patch('start_execution_manager.invoke_worker') as mock_invoke_worker, \
             patch.dict(os.environ, {'START_EXECUTION_WORKER_ARN': 'test-worker-function-arn'}, clear=True):
-        mock_jobs = list(range(500))
+        mock_jobs = list(range(400))
         mock_get_jobs_waiting_for_execution.return_value = mock_jobs
 
         mock_invoke_worker.return_value = {'StatusCode': None}
 
         start_execution_manager.lambda_handler(None, None)
 
-        mock_get_jobs_waiting_for_execution.assert_called_once_with(limit=600)
+        mock_get_jobs_waiting_for_execution.assert_called_once_with(limit=500)
 
         assert mock_invoke_worker.mock_calls == [
-            call('test-worker-function-arn', mock_jobs[0:300]),
-            call('test-worker-function-arn', mock_jobs[300:500]),
+            call('test-worker-function-arn', mock_jobs[0:250]),
+            call('test-worker-function-arn', mock_jobs[250:400]),
         ]
 
 
@@ -102,7 +102,7 @@ def test_lambda_handler_50_jobs():
 
         start_execution_manager.lambda_handler(None, None)
 
-        mock_get_jobs_waiting_for_execution.assert_called_once_with(limit=600)
+        mock_get_jobs_waiting_for_execution.assert_called_once_with(limit=500)
 
         assert mock_invoke_worker.mock_calls == [
             call('test-worker-function-arn', mock_jobs),
@@ -117,6 +117,6 @@ def test_lambda_handler_no_jobs():
 
         start_execution_manager.lambda_handler(None, None)
 
-        mock_get_jobs_waiting_for_execution.assert_called_once_with(limit=600)
+        mock_get_jobs_waiting_for_execution.assert_called_once_with(limit=500)
 
         mock_invoke_worker.assert_not_called()