diff --git a/changelog.d/8481.misc b/changelog.d/8481.misc
new file mode 100644
index 0000000000..069c2e8b3f
--- /dev/null
+++ b/changelog.d/8481.misc
@@ -0,0 +1 @@
+Update MSC3912 implementation: Redaction of related events
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/homeserver/HomeServerCapabilities.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/homeserver/HomeServerCapabilities.kt
index 4968df775a..78672adb00 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/homeserver/HomeServerCapabilities.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/homeserver/HomeServerCapabilities.kt
@@ -77,9 +77,9 @@ data class HomeServerCapabilities(
         val canRemotelyTogglePushNotificationsOfDevices: Boolean = false,
 
         /**
-         * True if the home server supports event redaction with relations.
+         * True if the home server supports redaction of related events.
          */
-        var canRedactEventWithRelations: Boolean = false,
+        var canRedactRelatedEvents: Boolean = false,
 
         /**
          * External account management url for use with MSC3824 delegated OIDC, provided in Wellknown.
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/room/send/SendService.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/room/send/SendService.kt
index 07036f4b65..9eb0fa4097 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/room/send/SendService.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/room/send/SendService.kt
@@ -158,10 +158,10 @@ interface SendService {
      * Redact (delete) the given event.
      * @param event the event to redact
      * @param reason optional reason string
-     * @param withRelations the list of relation types to redact with this event
+     * @param withRelTypes the list of relation types to redact with this event
      * @param additionalContent additional content to put in the event content
      */
-    fun redactEvent(event: Event, reason: String?, withRelations: List<String>? = null, additionalContent: Content? = null): Cancelable
+    fun redactEvent(event: Event, reason: String?, withRelTypes: List<String>? = null, additionalContent: Content? = null): Cancelable
 
     /**
      * Schedule this message to be resent.
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/auth/version/Versions.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/auth/version/Versions.kt
index 3fe5541b68..83186344bb 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/auth/version/Versions.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/auth/version/Versions.kt
@@ -59,8 +59,7 @@ private const val FEATURE_QR_CODE_LOGIN = "org.matrix.msc3882"
 private const val FEATURE_THREADS_MSC3771 = "org.matrix.msc3771"
 private const val FEATURE_THREADS_MSC3773 = "org.matrix.msc3773"
 private const val FEATURE_REMOTE_TOGGLE_PUSH_NOTIFICATIONS_MSC3881 = "org.matrix.msc3881"
-private const val FEATURE_EVENT_REDACTION_WITH_RELATIONS = "org.matrix.msc3912"
-private const val FEATURE_EVENT_REDACTION_WITH_RELATIONS_STABLE = "org.matrix.msc3912.stable"
+private const val FEATURE_REDACTION_OF_RELATED_EVENT = "org.matrix.msc3912"
 
 /**
  * Return true if the SDK supports this homeserver version.
@@ -162,9 +161,8 @@ internal fun Versions.doesServerSupportRemoteToggleOfPushNotifications(): Boolea
 /**
  * Indicate if the server supports MSC3912: https://github.com/matrix-org/matrix-spec-proposals/pull/3912.
  *
- * @return true if event redaction with relations is supported
+ * @return true if redaction of related events is supported
  */
-internal fun Versions.doesServerSupportRedactEventWithRelations(): Boolean {
-    return unstableFeatures?.get(FEATURE_EVENT_REDACTION_WITH_RELATIONS).orFalse() ||
-            unstableFeatures?.get(FEATURE_EVENT_REDACTION_WITH_RELATIONS_STABLE).orFalse()
+internal fun Versions.doesServerSupportRedactionOfRelatedEvents(): Boolean {
+    return unstableFeatures?.get(FEATURE_REDACTION_OF_RELATED_EVENT).orFalse()
 }
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/tasks/RedactEventTask.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/tasks/RedactEventTask.kt
index b060748a61..01d59a8c80 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/tasks/RedactEventTask.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/tasks/RedactEventTask.kt
@@ -30,7 +30,7 @@ internal interface RedactEventTask : Task<RedactEventTask.Params, String> {
             val roomId: String,
             val eventId: String,
             val reason: String?,
-            val withRelations: List<String>?,
+            val withRelTypes: List<String>?,
     )
 }
 
@@ -41,9 +41,9 @@ internal class DefaultRedactEventTask @Inject constructor(
 ) : RedactEventTask {
 
     override suspend fun execute(params: RedactEventTask.Params): String {
-        val withRelations = if (homeServerCapabilitiesDataSource.getHomeServerCapabilities()?.canRedactEventWithRelations.orFalse() &&
-                !params.withRelations.isNullOrEmpty()) {
-            params.withRelations
+        val withRelTypes = if (homeServerCapabilitiesDataSource.getHomeServerCapabilities()?.canRedactRelatedEvents.orFalse() &&
+                !params.withRelTypes.isNullOrEmpty()) {
+            params.withRelTypes
         } else {
             null
         }
@@ -55,7 +55,7 @@ internal class DefaultRedactEventTask @Inject constructor(
                     eventId = params.eventId,
                     body = EventRedactBody(
                             reason = params.reason,
-                            withRelations = withRelations,
+                            unstableWithRelTypes = withRelTypes,
                     )
             )
         }
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/mapper/HomeServerCapabilitiesMapper.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/mapper/HomeServerCapabilitiesMapper.kt
index 1c7a0591a1..b566cf7cb6 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/mapper/HomeServerCapabilitiesMapper.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/mapper/HomeServerCapabilitiesMapper.kt
@@ -47,7 +47,7 @@ internal object HomeServerCapabilitiesMapper {
                 canLoginWithQrCode = entity.canLoginWithQrCode,
                 canUseThreadReadReceiptsAndNotifications = entity.canUseThreadReadReceiptsAndNotifications,
                 canRemotelyTogglePushNotificationsOfDevices = entity.canRemotelyTogglePushNotificationsOfDevices,
-                canRedactEventWithRelations = entity.canRedactEventWithRelations,
+                canRedactRelatedEvents = entity.canRedactEventWithRelations,
                 externalAccountManagementUrl = entity.externalAccountManagementUrl,
         )
     }
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/homeserver/GetHomeServerCapabilitiesTask.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/homeserver/GetHomeServerCapabilitiesTask.kt
index a368325793..71f6ebd6e3 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/homeserver/GetHomeServerCapabilitiesTask.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/homeserver/GetHomeServerCapabilitiesTask.kt
@@ -25,7 +25,7 @@ import org.matrix.android.sdk.api.session.homeserver.HomeServerCapabilities
 import org.matrix.android.sdk.internal.auth.version.Versions
 import org.matrix.android.sdk.internal.auth.version.doesServerSupportLogoutDevices
 import org.matrix.android.sdk.internal.auth.version.doesServerSupportQrCodeLogin
-import org.matrix.android.sdk.internal.auth.version.doesServerSupportRedactEventWithRelations
+import org.matrix.android.sdk.internal.auth.version.doesServerSupportRedactionOfRelatedEvents
 import org.matrix.android.sdk.internal.auth.version.doesServerSupportRemoteToggleOfPushNotifications
 import org.matrix.android.sdk.internal.auth.version.doesServerSupportThreadUnreadNotifications
 import org.matrix.android.sdk.internal.auth.version.doesServerSupportThreads
@@ -154,7 +154,7 @@ internal class DefaultGetHomeServerCapabilitiesTask @Inject constructor(
                 homeServerCapabilitiesEntity.canRemotelyTogglePushNotificationsOfDevices =
                         getVersionResult.doesServerSupportRemoteToggleOfPushNotifications()
                 homeServerCapabilitiesEntity.canRedactEventWithRelations =
-                        getVersionResult.doesServerSupportRedactEventWithRelations()
+                        getVersionResult.doesServerSupportRedactionOfRelatedEvents()
             }
 
             if (getWellknownResult != null && getWellknownResult is WellknownResult.Prompt) {
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/DefaultSendService.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/DefaultSendService.kt
index 7176e36e0c..04749103c1 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/DefaultSendService.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/DefaultSendService.kt
@@ -140,11 +140,11 @@ internal class DefaultSendService @AssistedInject constructor(
                 .let { sendEvent(it) }
     }
 
-    override fun redactEvent(event: Event, reason: String?, withRelations: List<String>?, additionalContent: Content?): Cancelable {
+    override fun redactEvent(event: Event, reason: String?, withRelTypes: List<String>?, additionalContent: Content?): Cancelable {
         // TODO manage media/attachements?
-        val redactionEcho = localEchoEventFactory.createRedactEvent(roomId, event.eventId!!, reason, withRelations, additionalContent)
+        val redactionEcho = localEchoEventFactory.createRedactEvent(roomId, event.eventId!!, reason, withRelTypes, additionalContent)
                 .also { createLocalEcho(it) }
-        return eventSenderProcessor.postRedaction(redactionEcho, reason, withRelations)
+        return eventSenderProcessor.postRedaction(redactionEcho, reason, withRelTypes)
     }
 
     override fun resendTextMessage(localEcho: TimelineEvent): Cancelable {
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/LocalEchoEventFactory.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/LocalEchoEventFactory.kt
index c2bdec3596..9510f50420 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/LocalEchoEventFactory.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/LocalEchoEventFactory.kt
@@ -812,12 +812,12 @@ internal class LocalEchoEventFactory @Inject constructor(
         }
     }
      */
-    fun createRedactEvent(roomId: String, eventId: String, reason: String?, withRelations: List<String>? = null, additionalContent: Content? = null): Event {
+    fun createRedactEvent(roomId: String, eventId: String, reason: String?, withRelTypes: List<String>? = null, additionalContent: Content? = null): Event {
         val localId = LocalEcho.createLocalEchoId()
-        val content = if (reason != null || withRelations != null) {
+        val content = if (reason != null || withRelTypes != null) {
             EventRedactBody(
                     reason = reason,
-                    withRelations = withRelations,
+                    unstableWithRelTypes = withRelTypes,
             ).toContent().plus(additionalContent.orEmpty())
         } else {
             additionalContent
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/RedactEventWorker.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/RedactEventWorker.kt
index 576f31c64c..270d3a228e 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/RedactEventWorker.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/RedactEventWorker.kt
@@ -43,7 +43,7 @@ internal class RedactEventWorker(context: Context, params: WorkerParameters, ses
             val roomId: String,
             val eventId: String,
             val reason: String?,
-            val withRelations: List<String>? = null,
+            val withRelTypes: List<String>? = null,
             override val lastFailureMessage: String? = null
     ) : SessionWorkerParams
 
@@ -63,7 +63,7 @@ internal class RedactEventWorker(context: Context, params: WorkerParameters, ses
                             roomId = params.roomId,
                             eventId = params.eventId,
                             reason = params.reason,
-                            withRelations = params.withRelations,
+                            withRelTypes = params.withRelTypes,
                     )
             )
         }.fold(
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/model/EventRedactBody.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/model/EventRedactBody.kt
index cf2bc0dc4f..2ed5c9f363 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/model/EventRedactBody.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/model/EventRedactBody.kt
@@ -25,5 +25,10 @@ internal data class EventRedactBody(
         val reason: String? = null,
 
         @Json(name = "org.matrix.msc3912.with_relations")
-        val withRelations: List<String>? = null,
-)
+        val unstableWithRelTypes: List<String>? = null,
+
+        @Json(name = "with_rel_types")
+        val withRelTypes: List<String>? = null,
+) {
+    fun getBestWithRelTypes() = withRelTypes ?: unstableWithRelTypes
+}
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/EventSenderProcessor.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/EventSenderProcessor.kt
index b285e90c9a..90d78a51e0 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/EventSenderProcessor.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/EventSenderProcessor.kt
@@ -26,9 +26,9 @@ internal interface EventSenderProcessor : SessionLifecycleObserver {
 
     fun postEvent(event: Event, encrypt: Boolean): Cancelable
 
-    fun postRedaction(redactionLocalEcho: Event, reason: String?, withRelations: List<String>? = null): Cancelable
+    fun postRedaction(redactionLocalEcho: Event, reason: String?, withRelTypes: List<String>? = null): Cancelable
 
-    fun postRedaction(redactionLocalEchoId: String, eventToRedactId: String, roomId: String, reason: String?, withRelations: List<String>? = null): Cancelable
+    fun postRedaction(redactionLocalEchoId: String, eventToRedactId: String, roomId: String, reason: String?, withRelTypes: List<String>? = null): Cancelable
 
     fun postTask(task: QueuedTask): Cancelable
 
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/EventSenderProcessorCoroutine.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/EventSenderProcessorCoroutine.kt
index 9ce29c3c08..a4e3773eb9 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/EventSenderProcessorCoroutine.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/EventSenderProcessorCoroutine.kt
@@ -101,8 +101,8 @@ internal class EventSenderProcessorCoroutine @Inject constructor(
         return postTask(task)
     }
 
-    override fun postRedaction(redactionLocalEcho: Event, reason: String?, withRelations: List<String>?): Cancelable {
-        return postRedaction(redactionLocalEcho.eventId!!, redactionLocalEcho.redacts!!, redactionLocalEcho.roomId!!, reason, withRelations)
+    override fun postRedaction(redactionLocalEcho: Event, reason: String?, withRelTypes: List<String>?): Cancelable {
+        return postRedaction(redactionLocalEcho.eventId!!, redactionLocalEcho.redacts!!, redactionLocalEcho.roomId!!, reason, withRelTypes)
     }
 
     override fun postRedaction(
@@ -110,9 +110,9 @@ internal class EventSenderProcessorCoroutine @Inject constructor(
             eventToRedactId: String,
             roomId: String,
             reason: String?,
-            withRelations: List<String>?
+            withRelTypes: List<String>?
     ): Cancelable {
-        val task = queuedTaskFactory.createRedactTask(redactionLocalEchoId, eventToRedactId, roomId, reason, withRelations)
+        val task = queuedTaskFactory.createRedactTask(redactionLocalEchoId, eventToRedactId, roomId, reason, withRelTypes)
         return postTask(task)
     }
 
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/QueueMemento.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/QueueMemento.kt
index a900e4ae5d..85238ae944 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/QueueMemento.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/QueueMemento.kt
@@ -118,7 +118,7 @@ internal class QueueMemento @Inject constructor(
                                                         eventId = it.redacts,
                                                         roomId = it.roomId,
                                                         reason = body?.reason,
-                                                        withRelations = body?.withRelations,
+                                                        withRelTypes = body?.getBestWithRelTypes(),
                                                 )
                                         )
                                     }
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/QueuedTaskFactory.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/QueuedTaskFactory.kt
index 46df7e29f3..e79808ee3f 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/QueuedTaskFactory.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/QueuedTaskFactory.kt
@@ -43,13 +43,13 @@ internal class QueuedTaskFactory @Inject constructor(
         )
     }
 
-    fun createRedactTask(redactionLocalEcho: String, eventId: String, roomId: String, reason: String?, withRelations: List<String>? = null): QueuedTask {
+    fun createRedactTask(redactionLocalEcho: String, eventId: String, roomId: String, reason: String?, withRelTypes: List<String>? = null): QueuedTask {
         return RedactQueuedTask(
                 redactionLocalEchoId = redactionLocalEcho,
                 toRedactEventId = eventId,
                 roomId = roomId,
                 reason = reason,
-                withRelations = withRelations,
+                withRelTypes = withRelTypes,
                 redactEventTask = redactEventTask,
                 localEchoRepository = localEchoRepository,
                 cancelSendTracker = cancelSendTracker
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/RedactQueuedTask.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/RedactQueuedTask.kt
index f484c24aae..b51a04f863 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/RedactQueuedTask.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/queue/RedactQueuedTask.kt
@@ -26,14 +26,14 @@ internal class RedactQueuedTask(
         val redactionLocalEchoId: String,
         private val roomId: String,
         private val reason: String?,
-        private val withRelations: List<String>?,
+        private val withRelTypes: List<String>?,
         private val redactEventTask: RedactEventTask,
         private val localEchoRepository: LocalEchoRepository,
         private val cancelSendTracker: CancelSendTracker
 ) : QueuedTask(queueIdentifier = roomId, taskIdentifier = redactionLocalEchoId) {
 
     override suspend fun doExecute() {
-        redactEventTask.execute(RedactEventTask.Params(redactionLocalEchoId, roomId, toRedactEventId, reason, withRelations))
+        redactEventTask.execute(RedactEventTask.Params(redactionLocalEchoId, roomId, toRedactEventId, reason, withRelTypes))
     }
 
     override fun onTaskFailed() {