diff --git a/lib/src/omemo/sessionmanager.dart b/lib/src/omemo/sessionmanager.dart
index 0173491..acebb32 100644
--- a/lib/src/omemo/sessionmanager.dart
+++ b/lib/src/omemo/sessionmanager.dart
@@ -35,23 +35,6 @@ class OmemoSessionManager {
       _eventStreamController = StreamController<OmemoEvent>.broadcast(),
       _log = Logger('OmemoSessionManager');
 
-  /// Deserialise the OmemoSessionManager from JSON data [data].
-  factory OmemoSessionManager.fromJson(Map<String, dynamic> data, TrustManager trustManager) {
-    final ratchetMap = <RatchetMapKey, OmemoDoubleRatchet>{};
-    for (final rawRatchet in data['sessions']! as List<Map<String, dynamic>>) {
-      final key = RatchetMapKey(rawRatchet['jid']! as String, rawRatchet['deviceId']! as int);
-      final ratchet = OmemoDoubleRatchet.fromJson(rawRatchet['ratchet']! as Map<String, dynamic>);
-      ratchetMap[key] = ratchet;
-    }
-
-    return OmemoSessionManager(
-      Device.fromJson(data['device']! as Map<String, dynamic>),
-      data['devices']! as Map<String, List<int>>,
-      ratchetMap,
-      trustManager,
-    );
-  }
-
   /// Deserialise the OmemoSessionManager from JSON data [data] that does not contain
   /// the ratchet sessions.
   factory OmemoSessionManager.fromJsonWithoutSessions(Map<String, dynamic> data, Map<RatchetMapKey, OmemoDoubleRatchet> ratchetMap, TrustManager trustManager) {
@@ -566,42 +549,6 @@ class OmemoSessionManager {
   @visibleForTesting
   Map<RatchetMapKey, OmemoDoubleRatchet> getRatchetMap() => _ratchetMap;
 
-  /// Serialise the entire session manager into a JSON object.
-  Future<Map<String, dynamic>> toJson() async {
-    /*
-    {
-      'devices': {
-        'alice@...': [1, 2, ...],
-        'bob@...': [1],
-        ...
-      },
-      'device': { ... },
-      'sessions': [
-        {
-          'jid': 'alice@...',
-          'deviceId': 1,
-          'ratchet': { ... },
-        },
-        ...
-      ],
-    }
-    */
-
-    final sessions = List<Map<String, dynamic>>.empty(growable: true);
-    for (final entry in _ratchetMap.entries) {
-      sessions.add({
-        'jid': entry.key.jid,
-        'deviceId': entry.key.deviceId,
-        'ratchet': await entry.value.toJson(),
-      });
-    }
-    return {
-      'devices': _deviceMap,
-      'device': await (await getDevice()).toJson(),
-      'sessions': sessions,
-    };
-  }
-
   /// Serialise the entire session manager into a JSON object.
   Future<Map<String, dynamic>> toJsonWithoutSessions() async {
     /*
diff --git a/test/serialisation_test.dart b/test/serialisation_test.dart
index 815f36f..8244ac7 100644
--- a/test/serialisation_test.dart
+++ b/test/serialisation_test.dart
@@ -85,9 +85,11 @@ void main() {
     );
 
     // Serialise and deserialise
-    final serialised = await oldSession.toJson();
-    final newSession = OmemoSessionManager.fromJson(
+    final serialised = await oldSession.toJsonWithoutSessions();
+    final newSession = OmemoSessionManager.fromJsonWithoutSessions(
       serialised,
+      // NOTE: At this point, we don't care about this attribute
+      {},
       AlwaysTrustingTrustManager(),
     );
 
@@ -95,15 +97,6 @@ void main() {
     final newDevice = await newSession.getDevice();
     expect(await oldDevice.equals(newDevice), true);
     expect(await oldSession.getDeviceMap(), await newSession.getDeviceMap());
-
-    expect(oldSession.getRatchetMap().length, newSession.getRatchetMap().length);
-    for (final session in oldSession.getRatchetMap().entries) {
-      expect(newSession.getRatchetMap().containsKey(session.key), true);
-
-      final oldRatchet = oldSession.getRatchetMap()[session.key]!;
-      final newRatchet = newSession.getRatchetMap()[session.key]!;
-      expect(await oldRatchet.equals(newRatchet), true);
-    }
   });
 
   test('Test serialising and deserialising the BlindTrustBeforeVerificationTrustManager', () async {