diff --git a/composer.json b/composer.json
index 54b6d02..711b47f 100644
--- a/composer.json
+++ b/composer.json
@@ -4,7 +4,7 @@
   "license": "MIT",
   "require": {
     "hhvm": "^4.25",
-    "hhvm/hacktest": "^1.0",
+    "hhvm/hacktest": "^1.0|^2.0",
     "hhvm/hsl": "^4.0",
     "facebook/difflib": "^1.0.0"
   },