diff --git a/src/labeler.ts b/src/labeler.ts
index 2fdf0ff2..81f4bc4b 100644
--- a/src/labeler.ts
+++ b/src/labeler.ts
@@ -6,6 +6,7 @@ import { Minimatch, IMinimatch } from "minimatch";
 interface MatchConfig {
   all?: string[];
   any?: string[];
+  branch?: string;
 }
 
 type StringOrMatchConfig = string | MatchConfig;