diff --git a/packages/cnb_app_lifecycle/spec b/packages/cnb_app_lifecycle/spec
index c3def0da7..eb7719124 100644
--- a/packages/cnb_app_lifecycle/spec
+++ b/packages/cnb_app_lifecycle/spec
@@ -9,6 +9,7 @@ dependencies:
 files:
   - code.cloudfoundry.org/go.mod
   - code.cloudfoundry.org/go.sum
+  - code.cloudfoundry.org/vendor/modules.txt
   - code.cloudfoundry.org/vendor/code.cloudfoundry.org/cnbapplifecycle/cmd/builder/*.go # gosub
   - code.cloudfoundry.org/vendor/code.cloudfoundry.org/cnbapplifecycle/cmd/builder/cli/*.go # gosub
   - code.cloudfoundry.org/vendor/code.cloudfoundry.org/cnbapplifecycle/cmd/launcher/*.go # gosub