diff --git a/index.d.ts b/index.d.ts
index 9e85dff..c121a86 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,4 +1,4 @@
-declare function gitRepoInfo(): gitRepoInfo.GitRepoInfo;
+declare function gitRepoInfo(gitPath?: string): gitRepoInfo.GitRepoInfo;
 
 declare namespace gitRepoInfo {
   export interface GitRepoInfo {