diff --git a/core/src/main/java/google/registry/bsa/UploadBsaUnavailableDomainsAction.java b/core/src/main/java/google/registry/bsa/UploadBsaUnavailableDomainsAction.java
index 84debe1e9..a52ef1dfc 100644
--- a/core/src/main/java/google/registry/bsa/UploadBsaUnavailableDomainsAction.java
+++ b/core/src/main/java/google/registry/bsa/UploadBsaUnavailableDomainsAction.java
@@ -80,7 +80,7 @@ public class UploadBsaUnavailableDomainsAction implements Runnable {
 
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();
 
-  private static final int BATCH_SIZE = 50000;
+  private static final int BATCH_SIZE = 40000;
 
   Clock clock;