diff --git a/.github/.OwlBot.lock.yaml b/.github/.OwlBot.lock.yaml
index cb89b2e32..0b3c8cd98 100644
--- a/.github/.OwlBot.lock.yaml
+++ b/.github/.OwlBot.lock.yaml
@@ -1,3 +1,3 @@
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:ec49167c606648a063d1222220b48119c912562849a0528f35bfb592a9f72737
+  digest: sha256:2f90537dd7df70f6b663cd654b1fa5dee483cf6a4edcfd46072b2775be8a23ec
diff --git a/samples/AUTHORING_GUIDE.md b/samples/AUTHORING_GUIDE.md
index 55c97b32f..8249522ff 100644
--- a/samples/AUTHORING_GUIDE.md
+++ b/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/samples/CONTRIBUTING.md b/samples/CONTRIBUTING.md
index 34c882b6f..f5fe2e6ba 100644
--- a/samples/CONTRIBUTING.md
+++ b/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