diff --git a/index.d.ts b/index.d.ts
index ac3d640d9..9882767c1 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -90,6 +90,7 @@ declare namespace Rollbar {
         overwriteScrubFields?: boolean;
         payload?: Payload;
         reportLevel?: Level;
+        retryInterval?: number | null;
         rewriteFilenamePatterns?: string[];
         scrubFields?: string[];
         scrubHeaders?: string[];