diff --git a/scripts/changelog.js b/scripts/changelog.js
index 278462e38..6051ec3f8 100755
--- a/scripts/changelog.js
+++ b/scripts/changelog.js
@@ -13,7 +13,6 @@ const cliArguments = parseArguments( process.argv.slice( 2 ) );
 const changelogOptions = {
 	cwd: process.cwd(),
 	packages: 'packages',
-	mainBranch: 'epic/3757-esm',
 	releaseBranch: cliArguments.branch,
 	transformScope: name => {
 		if ( name === 'typedoc-plugins' ) {