diff --git a/README.md b/README.md
index 9def94e..1dde30c 100644
--- a/README.md
+++ b/README.md
@@ -66,8 +66,3 @@ jobs:
 | address                         | The API address of PipeCD's control-plane.                                                        |    yes   |               |
 | api-key                         | The API key with READ_WRITE role used by pipectl while communicating with PipeCD's control-plane. |    yes   |               |
 | token                           | The GITHUB_TOKEN secret.                                                                          |    yes   |               |
-
-## Contributing
-
-Source code for this action is placing at [pipe-cd/pipe](https://github.com/pipe-cd/pipe/tree/master/dockers/actions-plan-preview) repository.
-Please send pull request to that repository to update.