diff --git a/gradle.properties b/gradle.properties
index 790c20b833..afada5ce00 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -34,7 +34,7 @@ signing.element.keyId=Secret
 signing.element.keyPassword=Secret
 
 # This belongs here as it's the only way to share the version number between the plugin and the library.
-realmKotlinVersion = 1.2.0
+realmKotlinVersion = 1.3.0
 
 # Dummy values for signing secrets / nightly
 signing.element.nightly.storePassword=Secret
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/RealmCryptoStore.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/RealmCryptoStore.kt
index 4c7638a5f9..869e08a3c1 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/RealmCryptoStore.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/RealmCryptoStore.kt
@@ -77,7 +77,6 @@ import org.matrix.android.sdk.internal.crypto.util.RequestIdHelper
 import org.matrix.android.sdk.internal.database.RealmInstance
 import org.matrix.android.sdk.internal.database.andIf
 import org.matrix.android.sdk.internal.database.clearWith
-import org.matrix.android.sdk.internal.database.deleteAll
 import org.matrix.android.sdk.internal.database.deleteNullable
 import org.matrix.android.sdk.internal.database.queryIn
 import org.matrix.android.sdk.internal.di.CryptoDatabase
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/RealmExt.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/RealmExt.kt
index 4d26c3300f..b73bb144e7 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/RealmExt.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/RealmExt.kt
@@ -110,20 +110,6 @@ internal fun <T : RealmObject> RealmQuery<T>.andIf(
     }
 }
 
-internal fun MutableRealm.deleteAll() {
-    configuration.schema.forEach { kClass ->
-        delete(query(kClass).find())
-    }
-}
-
-internal fun DynamicMutableRealm.deleteAll() {
-    configuration.schema.mapNotNull {
-        it.simpleName
-    }.forEach { className ->
-        delete(query(className).find())
-    }
-}
-
 internal fun MutableRealm.deleteNullable(deleteable: Deleteable?) {
     if (deleteable == null) return
     delete(deleteable)
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/cache/ClearCacheTask.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/cache/ClearCacheTask.kt
index 6fd3824e49..f8ba1ede48 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/cache/ClearCacheTask.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/cache/ClearCacheTask.kt
@@ -17,7 +17,6 @@
 package org.matrix.android.sdk.internal.session.cache
 
 import org.matrix.android.sdk.internal.database.RealmInstance
-import org.matrix.android.sdk.internal.database.deleteAll
 import org.matrix.android.sdk.internal.task.Task
 import javax.inject.Inject