diff --git a/test/acceptance/workspaces/mono-repo-project/npm-project/package.json b/test/acceptance/workspaces/mono-repo-project/npm-project/package.json
index 5211b26c8e..b8afd0f242 100644
--- a/test/acceptance/workspaces/mono-repo-project/npm-project/package.json
+++ b/test/acceptance/workspaces/mono-repo-project/npm-project/package.json
@@ -30,6 +30,6 @@
     "optional": "^0.1.3",
     "st": "0.2.4",
     "stream-buffers": "^3.0.1",
-    "tap": "^5.7.0"
+    "tap": "^9.0.0"
   }
 }