diff --git a/rhodecode/lib/_vendor/jsonlogger/__init__.py b/rhodecode/lib/_vendor/jsonlogger/__init__.py
--- a/rhodecode/lib/_vendor/jsonlogger/__init__.py
+++ b/rhodecode/lib/_vendor/jsonlogger/__init__.py
@@ -3,7 +3,6 @@ This library is provided to allow standa
 to output log data as JSON formatted strings
 '''
 import logging
-import json
 import re
 from datetime import date, datetime, time, tzinfo, timedelta
 import traceback
@@ -13,6 +12,8 @@ from inspect import istraceback
 
 from collections import OrderedDict
 from rhodecode.lib.logging_formatter import _inject_req_id, ExceptionAwareFormatter
+from rhodecode.lib.ext_json import sjson as json
+
 
 ZERO = timedelta(0)
 HOUR = timedelta(hours=1)
diff --git a/rhodecode/lib/_vendor/statsd/__init__.py b/rhodecode/lib/_vendor/statsd/__init__.py
--- a/rhodecode/lib/_vendor/statsd/__init__.py
+++ b/rhodecode/lib/_vendor/statsd/__init__.py
@@ -16,7 +16,7 @@ log = logging.getLogger('rhodecode.stats
 
 def statsd_config(config, prefix='statsd.'):
     _config = {}
-    for key in config.keys():
+    for key in list(config.keys()):
         if key.startswith(prefix):
             _config[key[len(prefix):]] = config[key]
     return _config