diff --git a/utils/doclint/cli.js b/utils/doclint/cli.js
index 96eb000a..76156bb6 100755
--- a/utils/doclint/cli.js
+++ b/utils/doclint/cli.js
@@ -87,6 +87,10 @@ async function run() {
     clearExit = false;
   }
   console.log(`${errors.length} failures, ${warnings.length} warnings.`);
+
+  if (!clearExit && !process.env.TRAVIS)
+    console.log('\nIs your lib/ directory up to date? You might need to `npm run tsc`.\n');
+
   const runningTime = Date.now() - startTime;
   console.log(`DocLint Finished in ${runningTime / 1000} seconds`);
   process.exit(clearExit ? 0 : 1);