1 files changed, 4 insertions, 4 deletions
diff --git a/README.md b/README.md
index 2cb72984..80c17e0f 100644
--- a/README.md
+++ b/README.md
@@ -4,9 +4,9 @@
 
 This is the first web app of [me](https://github.com/crupest).
 
-The [front-end](https://github.com/crupest/Timeline/tree/master/FrontEnd) is written in [Typescript](https://www.typescriptlang.org/) and built with [React](https://reactjs.org/).
+The [front-end](https://github.com/crupest/Timeline/tree/main/FrontEnd) is written in [Typescript](https://www.typescriptlang.org/) and built with [React](https://reactjs.org/).
 
-The [back-end](https://github.com/crupest/Timeline/tree/master/BackEnd) is written in C# and built with [ASP.NET Core](https://github.com/dotnet/aspnetcore).
+The [back-end](https://github.com/crupest/Timeline/tree/main/BackEnd) is written in C# and built with [ASP.NET Core](https://github.com/dotnet/aspnetcore).
 
 Feel free to comment by opening an issue.
 
@@ -14,6 +14,6 @@ Feel free to comment by opening an issue.
 
 | usage            | branch    | badge                                                                                     |
 | ---------------- | --------- | ----------------------------------------------------------------------------------------- |
-| routine build    | `master`  | ![Front End CI](https://github.com/crupest/Timeline/workflows/Front%20End%20CI/badge.svg) |
-| routine build    | `master`  | ![Back End CI](https://github.com/crupest/Timeline/workflows/Back%20End%20CI/badge.svg)   |
+| routine build    | `main`  | ![Front End CI](https://github.com/crupest/Timeline/workflows/Front%20End%20CI/badge.svg) |
+| routine build    | `main`  | ![Back End CI](https://github.com/crupest/Timeline/workflows/Back%20End%20CI/badge.svg)   |
 | docker container | `release` | ![CD](https://github.com/crupest/Timeline/workflows/CD/badge.svg)                         |