diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/SessionModule.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/SessionModule.kt
index 1a5594f2..6640cb2a 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/SessionModule.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/SessionModule.kt
@@ -154,7 +154,7 @@ internal class SessionModule(private val sessionParams: SessionParams) {
 
         scope(DefaultSession.SCOPE) {
             val groupSummaryUpdater = GroupSummaryUpdater(get())
-            val eventsPruner = EventsPruner(get(), get())
+            val eventsPruner = EventsPruner(get(), get(), get(), get())
             val userEntityUpdater = UserEntityUpdater(get(), get(), get())
             listOf<LiveEntityObserver>(groupSummaryUpdater, eventsPruner, userEntityUpdater)
         }
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/RoomModule.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/RoomModule.kt
index c7df624c..d3abeb81 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/RoomModule.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/RoomModule.kt
@@ -21,24 +21,14 @@ import im.vector.matrix.android.internal.session.room.annotation.DefaultFindReac
 import im.vector.matrix.android.internal.session.room.annotation.FindReactionEventForUndoTask
 import im.vector.matrix.android.internal.session.room.create.CreateRoomTask
 import im.vector.matrix.android.internal.session.room.create.DefaultCreateRoomTask
-import im.vector.matrix.android.internal.session.room.membership.DefaultLoadRoomMembersTask
-import im.vector.matrix.android.internal.session.room.membership.LoadRoomMembersTask
-import im.vector.matrix.android.internal.session.room.membership.joining.DefaultInviteTask
-import im.vector.matrix.android.internal.session.room.membership.joining.DefaultJoinRoomTask
-import im.vector.matrix.android.internal.session.room.membership.joining.InviteTask
-import im.vector.matrix.android.internal.session.room.membership.joining.JoinRoomTask
-import im.vector.matrix.android.internal.session.room.membership.leaving.DefaultLeaveRoomTask
-import im.vector.matrix.android.internal.session.room.membership.leaving.LeaveRoomTask
+import im.vector.matrix.android.internal.session.room.prune.PruneEventTask
+import im.vector.matrix.android.internal.session.room.prune.DefaultPruneEventTask
 import im.vector.matrix.android.internal.session.room.read.DefaultSetReadMarkersTask
 import im.vector.matrix.android.internal.session.room.read.SetReadMarkersTask
 import im.vector.matrix.android.internal.session.room.send.LocalEchoEventFactory
 import im.vector.matrix.android.internal.session.room.state.DefaultSendStateTask
 import im.vector.matrix.android.internal.session.room.state.SendStateTask
-import im.vector.matrix.android.internal.session.room.timeline.DefaultGetContextOfEventTask
-import im.vector.matrix.android.internal.session.room.timeline.DefaultPaginationTask
-import im.vector.matrix.android.internal.session.room.timeline.GetContextOfEventTask
-import im.vector.matrix.android.internal.session.room.timeline.PaginationTask
-import im.vector.matrix.android.internal.session.room.timeline.TokenChunkEventPersistor
+import im.vector.matrix.android.internal.session.room.timeline.*
 import org.koin.dsl.module.module
 import retrofit2.Retrofit
 
@@ -104,6 +94,9 @@ class RoomModule {
             DefaultFindReactionEventForUndoTask(get()) as FindReactionEventForUndoTask
         }
 
+        scope(DefaultSession.SCOPE) {
+            DefaultPruneEventTask(get()) as PruneEventTask
+        }
 
     }
 }
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/prune/EventsPruner.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/prune/EventsPruner.kt
index 36e280bb..cb7a3818 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/prune/EventsPruner.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/prune/EventsPruner.kt
@@ -16,9 +16,6 @@
 
 package im.vector.matrix.android.internal.session.room.prune
 
-import androidx.work.ExistingWorkPolicy
-import androidx.work.OneTimeWorkRequestBuilder
-import androidx.work.WorkManager
 import com.zhuinden.monarchy.Monarchy
 import im.vector.matrix.android.api.auth.data.Credentials
 import im.vector.matrix.android.api.session.events.model.EventType
@@ -26,11 +23,14 @@ import im.vector.matrix.android.internal.database.RealmLiveEntityObserver
 import im.vector.matrix.android.internal.database.mapper.asDomain
 import im.vector.matrix.android.internal.database.model.EventEntity
 import im.vector.matrix.android.internal.database.query.where
-import im.vector.matrix.android.internal.util.WorkerParamsFactory
+import im.vector.matrix.android.internal.task.TaskExecutor
+import im.vector.matrix.android.internal.task.configureWith
 
-private const val PRUNE_EVENT_WORKER = "PRUNE_EVENT_WORKER"
 
-internal class EventsPruner(monarchy: Monarchy, private val credentials: Credentials) :
+internal class EventsPruner(monarchy: Monarchy,
+                            private val credentials: Credentials,
+                            private val pruneEventTask: PruneEventTask,
+                            private val taskExecutor: TaskExecutor) :
         RealmLiveEntityObserver<EventEntity>(monarchy) {
 
     override val query = Monarchy.Query<EventEntity> { EventEntity.where(it, type = EventType.REDACTION) }
@@ -39,16 +39,14 @@ internal class EventsPruner(monarchy: Monarchy, private val credentials: Credent
         val redactionEvents = inserted
                 .mapNotNull { it.asDomain() }
 
-        val pruneEventWorkerParams = PruneEventWorker.Params(redactionEvents, credentials.userId)
-        val workData = WorkerParamsFactory.toData(pruneEventWorkerParams)
+        val params = PruneEventTask.Params(
+                redactionEvents,
+                credentials.userId
+        )
 
-        val sendWork = OneTimeWorkRequestBuilder<PruneEventWorker>()
-                .setInputData(workData)
-                .build()
+        pruneEventTask.configureWith(params)
+                .executeBy(taskExecutor)
 
-        WorkManager.getInstance()
-                .beginUniqueWork(PRUNE_EVENT_WORKER, ExistingWorkPolicy.APPEND, sendWork)
-                .enqueue()
     }
 
 }
\ No newline at end of file
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/prune/PruneEventWorker.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/prune/PruneEventTask.kt
similarity index 87%
rename from matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/prune/PruneEventWorker.kt
rename to matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/prune/PruneEventTask.kt
index 08a1491e..82949b41 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/prune/PruneEventWorker.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/prune/PruneEventTask.kt
@@ -13,13 +13,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
 package im.vector.matrix.android.internal.session.room.prune
 
-import android.content.Context
-import androidx.work.Worker
-import androidx.work.WorkerParameters
-import com.squareup.moshi.JsonClass
+import arrow.core.Try
 import com.zhuinden.monarchy.Monarchy
 import im.vector.matrix.android.api.session.events.model.Event
 import im.vector.matrix.android.api.session.events.model.EventType
@@ -32,41 +28,30 @@ import im.vector.matrix.android.internal.database.model.EventAnnotationsSummaryE
 import im.vector.matrix.android.internal.database.model.EventEntity
 import im.vector.matrix.android.internal.database.model.ReactionAggregatedSummaryEntityFields
 import im.vector.matrix.android.internal.database.query.where
-import im.vector.matrix.android.internal.di.MatrixKoinComponent
 import im.vector.matrix.android.internal.di.MoshiProvider
-import im.vector.matrix.android.internal.util.WorkerParamsFactory
+import im.vector.matrix.android.internal.task.Task
 import im.vector.matrix.android.internal.util.tryTransactionSync
 import io.realm.Realm
-import org.koin.standalone.inject
 import timber.log.Timber
 
-//TODO should be a task instead of worker
-internal class PruneEventWorker(context: Context,
-                                workerParameters: WorkerParameters
-) : Worker(context, workerParameters), MatrixKoinComponent {
 
-    @JsonClass(generateAdapter = true)
-    internal class Params(
+internal interface PruneEventTask : Task<PruneEventTask.Params, Unit> {
+
+    data class Params(
             val redactionEvents: List<Event>,
             val userId: String
     )
 
-    private val monarchy by inject<Monarchy>()
+}
 
-    override fun doWork(): Result {
-        val params = WorkerParamsFactory.fromData<Params>(inputData)
-                ?: return Result.failure()
+internal class DefaultPruneEventTask(private val monarchy: Monarchy) : PruneEventTask {
 
-        val result = monarchy.tryTransactionSync { realm ->
+    override fun execute(params: PruneEventTask.Params): Try<Unit> {
+        return monarchy.tryTransactionSync { realm ->
             params.redactionEvents.forEach { event ->
                 pruneEvent(realm, event, params.userId)
             }
         }
-        return result.fold({
-            Result.retry()
-        }, {
-            Result.success()
-        })
     }
 
     private fun pruneEvent(realm: Realm, redactionEvent: Event, userId: String) {
@@ -154,5 +139,4 @@ internal class PruneEventWorker(context: Context,
             else -> emptyList()
         }
     }
-
 }
\ No newline at end of file