diff --git a/scripts/release/check_commit_metadata.sh b/scripts/release/check_commit_metadata.sh
index c11f9d0b59abf..7ad78992d0e0c 100755
--- a/scripts/release/check_commit_metadata.sh
+++ b/scripts/release/check_commit_metadata.sh
@@ -40,12 +40,12 @@ ignore_missing_metadata=${CODER_IGNORE_MISSING_COMMIT_METADATA:-0}
 
 main() {
 	# Match a commit prefix pattern, e.g. feat: or feat(site):.
-	prefix_pattern="^([a-z]+)(\([a-z]*\))?:"
+	prefix_pattern="^([a-z]+)(\([^)]+\))?:"
 
 	# If a commit contains this title prefix or the source PR contains the
 	# label, patch releases will not be allowed.
 	# This regex matches both `feat!:` and `feat(site)!:`.
-	breaking_title="^[a-z]+(\([a-z]*\))?!:"
+	breaking_title="^[a-z]+(\([^)]+\))?!:"
 	breaking_label=release/breaking
 	breaking_category=breaking
 	experimental_label=release/experimental