diff --git a/tests/test_git_superproject.py b/tests/test_git_superproject.py
index 5c1455f..b1ae357 100644
--- a/tests/test_git_superproject.py
+++ b/tests/test_git_superproject.py
@@ -23,6 +23,7 @@
 import git_superproject
 import manifest_xml
 import platform_utils
+from test_manifest_xml import sort_attributes
 
 
 class SuperprojectTestCase(unittest.TestCase):
@@ -140,12 +141,12 @@
     with open(manifest_path, 'r') as fp:
       manifest_xml = fp.read()
     self.assertEqual(
-        manifest_xml,
+        sort_attributes(manifest_xml),
         '<?xml version="1.0" ?><manifest>'
-        '<remote name="default-remote" fetch="http://localhost"/>'
+        '<remote fetch="http://localhost" name="default-remote"/>'
         '<default remote="default-remote" revision="refs/heads/main"/>'
-        '<project name="platform/art" path="art" revision="ABCDEF" '
-        'groups="notdefault,platform-' + self.platform + '"/>'
+        '<project groups="notdefault,platform-' + self.platform + '" '
+        'name="platform/art" path="art" revision="ABCDEF"/>'
         '<superproject name="superproject"/>'
         '</manifest>')
 
@@ -167,13 +168,13 @@
           with open(manifest_path, 'r') as fp:
             manifest_xml = fp.read()
           self.assertEqual(
-              manifest_xml,
+              sort_attributes(manifest_xml),
               '<?xml version="1.0" ?><manifest>'
-              '<remote name="default-remote" fetch="http://localhost"/>'
+              '<remote fetch="http://localhost" name="default-remote"/>'
               '<default remote="default-remote" revision="refs/heads/main"/>'
-              '<project name="platform/art" path="art" '
-              'revision="2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea" '
-              'groups="notdefault,platform-' + self.platform + '"/>'
+              '<project groups="notdefault,platform-' + self.platform + '" '
+              'name="platform/art" path="art" '
+              'revision="2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea"/>'
               '<superproject name="superproject"/>'
               '</manifest>')
 
@@ -208,16 +209,17 @@
           with open(manifest_path, 'r') as fp:
             manifest_xml = fp.read()
           self.assertEqual(
-              manifest_xml,
+              sort_attributes(manifest_xml),
               '<?xml version="1.0" ?><manifest>'
-              '<remote name="default-remote" fetch="http://localhost"/>'
-              '<remote name="goog" fetch="http://localhost2"/>'
+              '<remote fetch="http://localhost" name="default-remote"/>'
+              '<remote fetch="http://localhost2" name="goog"/>'
               '<default remote="default-remote" revision="refs/heads/main"/>'
-              '<project name="platform/art" path="art" '
-              'revision="2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea" '
-              'groups="notdefault,platform-' + self.platform + '"/>'
-              '<project name="platform/vendor/x" path="vendor/x" remote="goog" '
-              'revision="master-with-vendor" groups="vendor" clone-depth="1"/>'
+              '<project groups="notdefault,platform-' + self.platform + '" '
+              'name="platform/art" path="art" '
+              'revision="2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea"/>'
+              '<project clone-depth="1" groups="vendor" '
+              'name="platform/vendor/x" path="vendor/x" remote="goog" '
+              'revision="master-with-vendor"/>'
               '<superproject name="superproject"/>'
               '</manifest>')
 
diff --git a/tests/test_manifest_xml.py b/tests/test_manifest_xml.py
index 99848e5..bd74780 100644
--- a/tests/test_manifest_xml.py
+++ b/tests/test_manifest_xml.py
@@ -16,6 +16,7 @@
 
 import os
 import platform
+import re
 import shutil
 import tempfile
 import unittest
@@ -63,6 +64,30 @@
   INVALID_FS_PATHS += tuple(x.replace('/', os.path.sep) for x in INVALID_FS_PATHS)
 
 
+def sort_attributes(manifest):
+  """Sort the attributes of all elements alphabetically.
+
+  This is needed because different versions of the toxml() function from
+  xml.dom.minidom outputs the attributes of elements in different orders.
+  Before Python 3.8 they were output alphabetically, later versions preserve
+  the order specified by the user.
+
+  Args:
+    manifest: String containing an XML manifest.
+
+  Returns:
+    The XML manifest with the attributes of all elements sorted alphabetically.
+  """
+  new_manifest = ''
+  # This will find every element in the XML manifest, whether they have
+  # attributes or not. This simplifies recreating the manifest below.
+  matches = re.findall(r'(<[/?]?[a-z-]+\s*)((?:\S+?="[^"]+"\s*?)*)(\s*[/?]?>)', manifest)
+  for head, attrs, tail in matches:
+    m = re.findall(r'\S+?="[^"]+"', attrs)
+    new_manifest += head + ' '.join(sorted(m)) + tail
+  return new_manifest
+
+
 class ManifestParseTestCase(unittest.TestCase):
   """TestCase for parsing manifests."""
 
@@ -254,9 +279,9 @@
     self.assertEqual(manifest.superproject['name'], 'superproject')
     self.assertEqual(manifest.superproject['remote'].name, 'test-remote')
     self.assertEqual(
-        manifest.ToXml().toxml(),
+        sort_attributes(manifest.ToXml().toxml()),
         '<?xml version="1.0" ?><manifest>'
-        '<remote name="test-remote" fetch="http://localhost"/>'
+        '<remote fetch="http://localhost" name="test-remote"/>'
         '<default remote="test-remote" revision="refs/heads/main"/>'
         '<superproject name="superproject"/>'
         '</manifest>')
@@ -408,9 +433,9 @@
     project = manifest.projects[0]
     project.SetRevisionId('ABCDEF')
     self.assertEqual(
-        manifest.ToXml().toxml(),
+        sort_attributes(manifest.ToXml().toxml()),
         '<?xml version="1.0" ?><manifest>'
-        '<remote name="default-remote" fetch="http://localhost"/>'
+        '<remote fetch="http://localhost" name="default-remote"/>'
         '<default remote="default-remote" revision="refs/heads/main"/>'
         '<project name="test-name" revision="ABCDEF"/>'
         '</manifest>')
@@ -516,9 +541,9 @@
     self.assertEqual(manifest.superproject['remote'].name, 'test-remote')
     self.assertEqual(manifest.superproject['remote'].url, 'http://localhost/superproject')
     self.assertEqual(
-        manifest.ToXml().toxml(),
+        sort_attributes(manifest.ToXml().toxml()),
         '<?xml version="1.0" ?><manifest>'
-        '<remote name="test-remote" fetch="http://localhost"/>'
+        '<remote fetch="http://localhost" name="test-remote"/>'
         '<default remote="test-remote" revision="refs/heads/main"/>'
         '<superproject name="superproject"/>'
         '</manifest>')
@@ -537,10 +562,10 @@
     self.assertEqual(manifest.superproject['remote'].name, 'superproject-remote')
     self.assertEqual(manifest.superproject['remote'].url, 'http://localhost/platform/superproject')
     self.assertEqual(
-        manifest.ToXml().toxml(),
+        sort_attributes(manifest.ToXml().toxml()),
         '<?xml version="1.0" ?><manifest>'
-        '<remote name="default-remote" fetch="http://localhost"/>'
-        '<remote name="superproject-remote" fetch="http://localhost"/>'
+        '<remote fetch="http://localhost" name="default-remote"/>'
+        '<remote fetch="http://localhost" name="superproject-remote"/>'
         '<default remote="default-remote" revision="refs/heads/main"/>'
         '<superproject name="platform/superproject" remote="superproject-remote"/>'
         '</manifest>')
@@ -557,9 +582,9 @@
     self.assertEqual(manifest.superproject['name'], 'superproject')
     self.assertEqual(manifest.superproject['remote'].name, 'default-remote')
     self.assertEqual(
-        manifest.ToXml().toxml(),
+        sort_attributes(manifest.ToXml().toxml()),
         '<?xml version="1.0" ?><manifest>'
-        '<remote name="default-remote" fetch="http://localhost"/>'
+        '<remote fetch="http://localhost" name="default-remote"/>'
         '<default remote="default-remote" revision="refs/heads/main"/>'
         '<superproject name="superproject"/>'
         '</manifest>')