diff --git a/README.md b/README.md
index 1efbc2ff..42b258ea 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ For Maintainers
 Modify `version` in `build.gradle` at a detached commit, and then tag the commit with an annotation.
 
 ```
-git checkout --detach master
+git checkout --detach main
 
 (Edit: Remove "-SNAPSHOT" in "version" in build.gradle.)