diff --git a/packages/@aws-cdk/integ-runner/package.json b/packages/@aws-cdk/integ-runner/package.json
index e813abd0fe939..4112e216760f4 100644
--- a/packages/@aws-cdk/integ-runner/package.json
+++ b/packages/@aws-cdk/integ-runner/package.json
@@ -29,6 +29,9 @@
         "lib/workers/extract/index.js"
       ],
       "externals": {
+        "optionalDependencies": [
+          "fsevents"
+        ],
         "dependencies": [
           "aws-cdk"
         ]