diff --git a/Tests/Runtime/Darkmatter.FonepayUnity.Runtime.Tests.asmdef b/Tests/Runtime/Darkmatter.FonepayUnity.Runtime.Tests.asmdef
index 24a212e..f2ce83b 100644
--- a/Tests/Runtime/Darkmatter.FonepayUnity.Runtime.Tests.asmdef
+++ b/Tests/Runtime/Darkmatter.FonepayUnity.Runtime.Tests.asmdef
@@ -3,6 +3,7 @@
     "rootNamespace": "",
     "references": [
         "Darkmatter.FonepayUnity",
+        "UniTask",
         "UnityEngine.TestRunner"
     ],
     "includePlatforms": [],