diff --git a/README.md b/README.md
index af4a9505f..dc1c08c18 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # Harbor
 
-[![CI](https://github.com/goharbor/harbor/workflows/CI/badge.svg?branch=master&event=push)](https://github.com/goharbor/harbor/actions?query=event%3Apush+branch%3Amaster+workflow%3ACI+)
-[![Coverage Status](https://codecov.io/gh/goharbor/harbor/branch/master/graph/badge.svg)](https://codecov.io/gh/goharbor/harbor)
+[![CI](https://github.com/goharbor/harbor/workflows/CI/badge.svg?branch=main&event=push)](https://github.com/goharbor/harbor/actions?query=event%3Apush+branch%3Amain+workflow%3ACI+)
+[![Coverage Status](https://codecov.io/gh/goharbor/harbor/branch/main/graph/badge.svg)](https://codecov.io/gh/goharbor/harbor)
 [![Go Report Card](https://goreportcard.com/badge/github.com/goharbor/harbor)](https://goreportcard.com/report/github.com/goharbor/harbor)
 [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/2095/badge)](https://bestpractices.coreinfrastructure.org/projects/2095)
 [![Codacy Badge](https://app.codacy.com/project/badge/Grade/792fe1755edc4d6e91f4c3469f553389)](https://www.codacy.com/gh/goharbor/harbor/dashboard?utm_source=github.com&utm_medium=referral&utm_content=goharbor/harbor&utm_campaign=Badge_Grade)
@@ -48,8 +48,8 @@ For learning the architecture design of Harbor, check the document [Architecture
 ## API
 
 * Harbor RESTful API: The APIs for most administrative operations of Harbor and can be used to perform integrations with Harbor programmatically.
-  * Part 1: [New or changed APIs](https://editor.swagger.io/?url=https://raw.githubusercontent.com/goharbor/harbor/master/api/v2.0/swagger.yaml)
-  * Part 2: [Legacy APIs](https://editor.swagger.io/?url=https://raw.githubusercontent.com/goharbor/harbor/master/api/v2.0/legacy_swagger.yaml)
+  * Part 1: [New or changed APIs](https://editor.swagger.io/?url=https://raw.githubusercontent.com/goharbor/harbor/main/api/v2.0/swagger.yaml)
+  * Part 2: [Legacy APIs](https://editor.swagger.io/?url=https://raw.githubusercontent.com/goharbor/harbor/main/api/v2.0/legacy_swagger.yaml)
 
 ## Install & Run