diff --git a/deployer/src/deployer/search/__init__.py b/deployer/src/deployer/search/__init__.py
index 3c9615c0..1d91eb1a 100644
--- a/deployer/src/deployer/search/__init__.py
+++ b/deployer/src/deployer/search/__init__.py
@@ -93,8 +93,8 @@ def get_progressbar():
         for success, info in streaming_bulk(
             connection,
             generator(),
-            chunk_size=250,  # default: 500
-            max_chunk_bytes=52428800,  # default: 104857600
+            chunk_size=125,  # default: 500
+            max_chunk_bytes=26214400,  # default: 104857600
             max_retries=4,  # default: 0
             # If the bulk indexing failed, it will by default raise a BulkIndexError.
             # Setting this to 'False' will suppress that.