diff --git a/interop-cats/shared/src/test/scala/zio/interop/catzSpec.scala b/interop-cats/shared/src/test/scala/zio/interop/catzSpec.scala
index 2b5920f4..8fb6812b 100644
--- a/interop-cats/shared/src/test/scala/zio/interop/catzSpec.scala
+++ b/interop-cats/shared/src/test/scala/zio/interop/catzSpec.scala
@@ -1,6 +1,6 @@
 package zio.interop
 
-import cats.Eq
+import cats.{ Eq, Monad }
 import cats.effect.laws.discipline.arbitrary._
 import cats.effect.laws.discipline.{ ConcurrentEffectTests, ConcurrentTests, EffectTests }
 import cats.effect.laws.util.{ TestContext, TestInstances }
@@ -149,6 +149,7 @@ class catzSpec
     ContextShift[UIO]
     CatzClock[UIO]
     Timer[UIO]
+    Monad[UIO]
   }
 }