diff --git a/src/tests/Common/scripts/format.py b/src/tests/Common/scripts/format.py
index 47089497631f13..1ba1ecc7ce63aa 100644
--- a/src/tests/Common/scripts/format.py
+++ b/src/tests/Common/scripts/format.py
@@ -118,7 +118,7 @@ def main(argv):
     elif platform == 'windows':
         bootstrapFilename = "bootstrap.cmd"
 
-    bootstrapUrl = "https://raw.githubusercontent.com/dotnet/jitutils/master/" + bootstrapFilename
+    bootstrapUrl = "https://raw.githubusercontent.com/dotnet/jitutils/main/" + bootstrapFilename
 
     with TempDir() as temp_location:
         bootstrapPath = os.path.join(temp_location, bootstrapFilename)
diff --git a/src/tests/Common/scripts/run-pmi-diffs.py b/src/tests/Common/scripts/run-pmi-diffs.py
index a4f1d3ecde7182..106137eaeaefd6 100755
--- a/src/tests/Common/scripts/run-pmi-diffs.py
+++ b/src/tests/Common/scripts/run-pmi-diffs.py
@@ -502,7 +502,7 @@ def do_pmi_diffs():
 
     # Clone jitutils
 
-    command = 'git clone -b master --single-branch %s %s' % (Jitutils_url, jitutilsPath)
+    command = 'git clone -b main --single-branch %s %s' % (Jitutils_url, jitutilsPath)
     log(command)
     returncode = 0 if testing else os.system(command)
     if returncode != 0: