diff --git a/src/index.js b/src/index.js
index 71e1493..cf18459 100644
--- a/src/index.js
+++ b/src/index.js
@@ -16,7 +16,7 @@ const webVitalsBase = {
   url: 'current-page-url',
 };
 
-const vitals = { cls: null, lcp: null, fcp: null, ttfb: null };
+const vitals = { cls: null, lcp: null, fcp: null, ttfb: null, inp: null };
 const deviceMetrics = {
   device_mem: null,
   device_cpu: null,