diff --git a/test/blackbox-tests/test-cases/vendor/duniverse/dune-project b/test/blackbox-tests/test-cases/vendor/duniverse/dune-project
index 0636ab6acf4a..929c696e5619 100644
--- a/test/blackbox-tests/test-cases/vendor/duniverse/dune-project
+++ b/test/blackbox-tests/test-cases/vendor/duniverse/dune-project
@@ -1 +1 @@
-(lang dune 1.11)
+(lang dune 2.0)
diff --git a/test/blackbox-tests/test-cases/vendor/duniverse/duniverse/vendored/dune-project b/test/blackbox-tests/test-cases/vendor/duniverse/duniverse/vendored/dune-project
index bc29044968de..d58b8a48151c 100644
--- a/test/blackbox-tests/test-cases/vendor/duniverse/duniverse/vendored/dune-project
+++ b/test/blackbox-tests/test-cases/vendor/duniverse/duniverse/vendored/dune-project
@@ -1,2 +1,2 @@
-(lang dune 1.10)
+(lang dune 2.0)
 (name vendored)
diff --git a/test/blackbox-tests/test-cases/vendor/run.t b/test/blackbox-tests/test-cases/vendor/run.t
index 7982477864e0..0b241ad97e5e 100644
--- a/test/blackbox-tests/test-cases/vendor/run.t
+++ b/test/blackbox-tests/test-cases/vendor/run.t
@@ -1,6 +1,6 @@
 Vendored directories should be traversed to find targets so that they are built when they are depend upon
 
-  $ dune build --root duniverse
+  $ dune build --root duniverse --debug-dependency-path
   Entering directory 'duniverse'
 
 Aliases should not be resolved in vendored sub directories