diff --git a/zio-cache/shared/src/main/scala/zio/cache/Cache.scala b/zio-cache/shared/src/main/scala/zio/cache/Cache.scala
index 3173221..0a1090d 100644
--- a/zio-cache/shared/src/main/scala/zio/cache/Cache.scala
+++ b/zio-cache/shared/src/main/scala/zio/cache/Cache.scala
@@ -25,7 +25,7 @@ import java.util.concurrent.atomic.{AtomicBoolean, LongAdder}
  * the same key the lookup function will only be computed once and the result
  * will be returned to all fibers.
  */
-sealed abstract class Cache[-Key, +Error, +Value] {
+abstract class Cache[-Key, +Error, +Value] {
 
   /**
    * Returns statistics for this cache.