diff --git a/requirements_macos.txt b/requirements_macos.txt
index 36e1198..64433b3 100644
--- a/requirements_macos.txt
+++ b/requirements_macos.txt
@@ -7,6 +7,5 @@ parameterized
 paramiko
 psutil
 pylint
-selenium <= 3.6.0
-
-https://pypi.python.org/packages/c8/20/3f767baf52ae14b5fa0c6a531651ecb9dbfdc5f75a3dc8eea740df72270c/pyobjc-framework-SystemConfiguration-3.2.1.tar.gz
+selenium
+pyobjc-framework-SystemConfiguration
diff --git a/xv_leak_tools/log.py b/xv_leak_tools/log.py
index 689b9ac..ac5372e 100755
--- a/xv_leak_tools/log.py
+++ b/xv_leak_tools/log.py
@@ -76,7 +76,7 @@ def _configure_logger(logger_name, stream_format, file_format, logfile, level, l
             logger.addHandler(file_handler)
 
         if stream_format:
-            formatter = colorlog.TTYColoredFormatter(fmt=stream_format, log_colors=log_colors)
+            formatter = colorlog.TTYColoredFormatter(stream=sys.stdout, fmt=stream_format, log_colors=log_colors)
             stream_handler = logging.StreamHandler(stream=sys.stdout)
             stream_handler.setFormatter(formatter)
             logger.addHandler(stream_handler)