1 files changed, 2 insertions, 4 deletions
diff --git a/testing/web-platform/manifestupdate.py b/testing/web-platform/manifestupdate.py
index 79b7f1ae56..f8f9d08cb9 100644
--- a/testing/web-platform/manifestupdate.py
+++ b/testing/web-platform/manifestupdate.py
@@ -5,13 +5,13 @@
 import argparse
 import errno
 import hashlib
-import imp
 import os
 import sys
 
 import manifestdownload
 import six
 from mach.util import get_state_dir
+from mozfile import load_source
 from mozlog.structured import commandline
 from six.moves import configparser
 from wptrunner import wptcommandline
@@ -21,9 +21,7 @@ manifest = None
 
 def do_delayed_imports(wpt_dir):
     global manifest
-    imp.load_source(
-        "localpaths", os.path.join(wpt_dir, "tests", "tools", "localpaths.py")
-    )
+    load_source("localpaths", os.path.join(wpt_dir, "tests", "tools", "localpaths.py"))
     sys.path.insert(0, os.path.join(wpt_dir, "tools", "manifest"))
     import manifest