diff --git a/testing/web-platform/tests/tools/serve/serve.py b/testing/web-platform/tests/tools/serve/serve.py
index 03d123921fd7..a7bb3cb4a42b 100644
--- a/testing/web-platform/tests/tools/serve/serve.py
+++ b/testing/web-platform/tests/tools/serve/serve.py
@@ -18,6 +18,7 @@ from collections import defaultdict, OrderedDict
 from multiprocessing import Process, Event
 
 from localpaths import repo_root
+from six.moves import reload_module
 
 from manifest.sourcefile import read_script_metadata, js_meta_re, parse_variants
 from wptserve import server as wptserve, handlers
@@ -567,7 +568,7 @@ def start_ws_server(host, port, paths, routes, bind_address, config, ssl_config,
                     **kwargs):
     # Ensure that when we start this in a new process we don't inherit the
     # global lock in the logging module
-    reload(logging)
+    reload_module(logging)
     return WebSocketDaemon(host,
                            str(port),
                            repo_root,
@@ -581,7 +582,7 @@ def start_wss_server(host, port, paths, routes, bind_address, config, ssl_config
                      **kwargs):
     # Ensure that when we start this in a new process we don't inherit the
     # global lock in the logging module
-    reload(logging)
+    reload_module(logging)
     return WebSocketDaemon(host,
                            str(port),
                            repo_root,