diff --git a/README.md b/README.md
index e18233ed..ecd361d2 100644
--- a/README.md
+++ b/README.md
@@ -193,10 +193,10 @@ If you're on macOS, we recommend installing rbenv with
    effect.
 
 4. Verify that rbenv is properly set up using this
-   [rbenv-doctor](https://github.com/rbenv/rbenv-installer/blob/master/bin/rbenv-doctor) script:
+   [rbenv-doctor](https://github.com/rbenv/rbenv-installer/blob/main/bin/rbenv-doctor) script:
 
     ~~~ sh
-    $ curl -fsSL https://github.com/rbenv/rbenv-installer/raw/master/bin/rbenv-doctor | bash
+    $ curl -fsSL https://github.com/rbenv/rbenv-installer/raw/main/bin/rbenv-doctor | bash
     Checking for `rbenv' in PATH: /usr/local/bin/rbenv
     Checking for rbenv shims in PATH: OK
     Checking `rbenv install' support: /usr/local/bin/rbenv-install (ruby-build 20170523)