diff --git a/scripts/extract-release-label.mjs b/scripts/extract-release-label.mjs
index 93d13be0..8e8ef7bf 100644
--- a/scripts/extract-release-label.mjs
+++ b/scripts/extract-release-label.mjs
@@ -7,7 +7,11 @@ if (process.argv.length < 3) {
 }
 
 const prTitle = process.argv[2];
-const prLabel = prTitle.split(':')[0].trim();
+
+// Parse the conventional-commit prefix `type(scope)!:`, keeping only the type
+// and dropping an optional scope and breaking-change marker.
+const prefixMatch = prTitle.match(/^\s*([a-zA-Z]+)(?:\([^)]*\))?!?:/);
+const prLabel = prefixMatch ? prefixMatch[1].toLowerCase() : '';
 
 const config = await load({ extends: ["./commitlint.config.js"] });
 const commitPrefix = config?.rules?.['type-enum']?.[2] || [];