diff --git a/src/Wrapper/LambdaWrapper.js b/src/Wrapper/LambdaWrapper.js
index 9e31abbb..4c09b7c4 100644
--- a/src/Wrapper/LambdaWrapper.js
+++ b/src/Wrapper/LambdaWrapper.js
@@ -92,6 +92,7 @@ export default (configuration, handler, throwError = false) => {
 
     // If the event is to trigger a warm up, then don't bother returning the function.
     if (di.getEvent().source === 'serverless-plugin-warmup') {
+      logger.metric('warmup', true, true);
       return callback(null, 'Lambda is warm!');
     }