diff --git a/synthtool/gcp/templates/python_library/samples/AUTHORING_GUIDE.md b/synthtool/gcp/templates/python_library/samples/AUTHORING_GUIDE.md
index 55c97b32f..8249522ff 100644
--- a/synthtool/gcp/templates/python_library/samples/AUTHORING_GUIDE.md
+++ b/synthtool/gcp/templates/python_library/samples/AUTHORING_GUIDE.md
@@ -1 +1 @@
-See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/AUTHORING_GUIDE.md
\ No newline at end of file
+See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/AUTHORING_GUIDE.md
\ No newline at end of file
diff --git a/synthtool/gcp/templates/python_library/samples/CONTRIBUTING.md b/synthtool/gcp/templates/python_library/samples/CONTRIBUTING.md
index 34c882b6f..f5fe2e6ba 100644
--- a/synthtool/gcp/templates/python_library/samples/CONTRIBUTING.md
+++ b/synthtool/gcp/templates/python_library/samples/CONTRIBUTING.md
@@ -1 +1 @@
-See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/CONTRIBUTING.md
\ No newline at end of file
+See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/CONTRIBUTING.md
\ No newline at end of file