diff --git a/media-translation/README.md b/media-translation/README.md
index 2d998a2e11..f27abf4ec8 100644
--- a/media-translation/README.md
+++ b/media-translation/README.md
@@ -33,7 +33,7 @@ Before running the samples, make sure you've followed the steps outlined in
 
 ### Quickstart
 
-View the [source code](https://github.com/googleapis/nodejs-media-translation/blob/master/samples/quickstart.js).
+View the [source code](https://github.com/googleapis/nodejs-media-translation/blob/main/samples/quickstart.js).
 
 [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-media-translation&page=editor&open_in_editor=samples/quickstart.js,samples/README.md)
 
@@ -50,7 +50,7 @@ __Usage:__
 
 ### Translate_from_file
 
-View the [source code](https://github.com/googleapis/nodejs-media-translation/blob/master/samples/translate_from_file.js).
+View the [source code](https://github.com/googleapis/nodejs-media-translation/blob/main/samples/translate_from_file.js).
 
 [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-media-translation&page=editor&open_in_editor=samples/translate_from_file.js,samples/README.md)
 
@@ -67,7 +67,7 @@ __Usage:__
 
 ### Translate_from_mic
 
-View the [source code](https://github.com/googleapis/nodejs-media-translation/blob/master/samples/translate_from_mic.js).
+View the [source code](https://github.com/googleapis/nodejs-media-translation/blob/main/samples/translate_from_mic.js).
 
 [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-media-translation&page=editor&open_in_editor=samples/translate_from_mic.js,samples/README.md)