diff --git a/services/github/github-commits-since.tester.js b/services/github/github-commits-since.tester.js
index 5376a13587..4ba6e65c29 100644
--- a/services/github/github-commits-since.tester.js
+++ b/services/github/github-commits-since.tester.js
@@ -30,7 +30,7 @@ t.create('Commits since by latest release')
   })
 
 t.create('Commits since by latest release (branch)')
-  .get('/microsoft/typescript/latest/master.json')
+  .get('/microsoft/typescript/latest/main.json')
   .expectBadge({
     label: isCommitsSince,
     message: isMetric,
@@ -44,7 +44,7 @@ t.create('Commits since by latest SemVer release')
   })
 
 t.create('Commits since by latest pre-release')
-  .get('/microsoft/typescript/latest/master.json?include_prereleases')
+  .get('/microsoft/typescript/latest/main.json?include_prereleases')
   .expectBadge({
     label: isCommitsSince,
     message: isMetric,