diff --git a/packages/wakatime/__about__.py b/packages/wakatime/__about__.py
index 1bd0b4f..85f4695 100644
--- a/packages/wakatime/__about__.py
+++ b/packages/wakatime/__about__.py
@@ -1,7 +1,7 @@
 __title__ = 'wakatime'
 __description__ = 'Common interface to the WakaTime api.'
 __url__ = 'https://github.com/wakatime/wakatime'
-__version_info__ = ('10', '4', '0')
+__version_info__ = ('10', '4', '1')
 __version__ = '.'.join(__version_info__)
 __author__ = 'Alan Hamlett'
 __author_email__ = 'alan@wakatime.com'
diff --git a/packages/wakatime/constants.py b/packages/wakatime/constants.py
index 938d673..070a8f9 100644
--- a/packages/wakatime/constants.py
+++ b/packages/wakatime/constants.py
@@ -46,11 +46,11 @@ Default is 2MB.
 """
 MAX_FILE_SIZE_SUPPORTED = 2000000
 
-""" Default number of offline heartbeats to sync before exiting."""
+""" Default limit of number of offline heartbeats to sync before exiting."""
 DEFAULT_SYNC_OFFLINE_ACTIVITY = 100
 
 """ Number of heartbeats per api request.
 Even when sending more heartbeats, this is the number of heartbeats sent per
 individual https request to the WakaTime API.
 """
-HEARTBEATS_PER_REQUEST = 10
+HEARTBEATS_PER_REQUEST = 50
diff --git a/packages/wakatime/main.py b/packages/wakatime/main.py
index 42c227e..a1a6dca 100644
--- a/packages/wakatime/main.py
+++ b/packages/wakatime/main.py
@@ -14,6 +14,7 @@ from __future__ import print_function
 import logging
 import os
 import sys
+import time
 import traceback
 
 pwd = os.path.dirname(os.path.abspath(__file__))
@@ -76,6 +77,7 @@ def execute(argv=None):
         if retval == SUCCESS:
             queue = Queue(args, configs)
             for offline_heartbeats in queue.pop_many(args.sync_offline_activity):
+                time.sleep(1)
                 retval = send_heartbeats(offline_heartbeats, args, configs)
                 if retval != SUCCESS:
                     break