diff --git a/mobx/CHANGELOG.md b/mobx/CHANGELOG.md
index e195b9802..9a40ef47b 100644
--- a/mobx/CHANGELOG.md
+++ b/mobx/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.1.2
+
+- Fix tests in dart 2.19 - [@amondnet](https://github.com/amondnet)
+
 ## 2.1.1
 
 - Allow a custom equals parameter for ObservableStream - [@amondnet](https://github.com/amondnet)
diff --git a/mobx/lib/src/core.dart b/mobx/lib/src/core.dart
index 171742da5..f02caf09e 100644
--- a/mobx/lib/src/core.dart
+++ b/mobx/lib/src/core.dart
@@ -1,6 +1,8 @@
 import 'dart:async';
 import 'dart:collection';
 
+import 'package:meta/meta.dart';
+
 import '../mobx.dart';
 import 'utils.dart';
 
diff --git a/mobx/lib/src/core/atom.dart b/mobx/lib/src/core/atom.dart
index 8614a8129..f9b579772 100644
--- a/mobx/lib/src/core/atom.dart
+++ b/mobx/lib/src/core/atom.dart
@@ -52,7 +52,7 @@ class Atom {
   final Map<_ListenerKind, Set<void Function()>?> _observationListeners = {};
 
   void reportObserved() {
-    _context._reportObserved(this);
+    _context.reportObserved(this);
   }
 
   void reportChanged() {
diff --git a/mobx/lib/src/core/computed.dart b/mobx/lib/src/core/computed.dart
index 79929519f..717a23b57 100644
--- a/mobx/lib/src/core/computed.dart
+++ b/mobx/lib/src/core/computed.dart
@@ -96,7 +96,7 @@ class Computed<T> extends Atom implements Derivation, ObservableValue<T> {
 
   T? computeValue({required bool track}) {
     _isComputing = true;
-    _context._pushComputation();
+    _context.pushComputation();
 
     T? value;
     if (track) {
@@ -114,7 +114,7 @@ class Computed<T> extends Atom implements Derivation, ObservableValue<T> {
       }
     }
 
-    _context._popComputation();
+    _context.popComputation();
     _isComputing = false;
 
     return value;
@@ -122,7 +122,7 @@ class Computed<T> extends Atom implements Derivation, ObservableValue<T> {
 
   @override
   void _suspend() {
-    _context._clearObservables(this);
+    _context.clearObservables(this);
     _value = null;
   }
 
diff --git a/mobx/lib/src/core/context.dart b/mobx/lib/src/core/context.dart
index faae12389..30ce706b2 100644
--- a/mobx/lib/src/core/context.dart
+++ b/mobx/lib/src/core/context.dart
@@ -264,7 +264,8 @@ class ReactiveContext {
     return result;
   }
 
-  void _reportObserved(Atom atom) {
+  @protected
+  void reportObserved(Atom atom) {
     final derivation = _state.trackingDerivation;
 
     if (derivation != null) {
@@ -404,7 +405,8 @@ class ReactiveContext {
     }
   }
 
-  void _clearObservables(Derivation derivation) {
+  @protected
+  void clearObservables(Derivation derivation) {
     final observables = derivation._observables;
     derivation._observables = {};
 
@@ -521,11 +523,13 @@ class ReactiveContext {
     _state.allowStateChanges = allow;
   }
 
-  void _pushComputation() {
+  @protected
+  void pushComputation() {
     _state.computationDepth++;
   }
 
-  void _popComputation() {
+  @protected
+  void popComputation() {
     _state.computationDepth--;
   }
 
diff --git a/mobx/lib/src/core/reaction.dart b/mobx/lib/src/core/reaction.dart
index 5ba9468fb..cbfce29e7 100644
--- a/mobx/lib/src/core/reaction.dart
+++ b/mobx/lib/src/core/reaction.dart
@@ -64,7 +64,7 @@ class ReactionImpl implements Reaction {
     _isRunning = false;
 
     if (_isDisposed) {
-      _context._clearObservables(this);
+      _context.clearObservables(this);
     }
 
     _context.endBatch();
@@ -85,7 +85,7 @@ class ReactionImpl implements Reaction {
     _isRunning = false;
 
     if (_isDisposed) {
-      _context._clearObservables(this);
+      _context.clearObservables(this);
     }
 
     if (_context._hasCaughtException(this)) {
@@ -142,7 +142,7 @@ class ReactionImpl implements Reaction {
     // ignore: cascade_invocations
     _context
       ..startBatch()
-      .._clearObservables(this)
+      ..clearObservables(this)
       ..endBatch();
   }
 
diff --git a/mobx/lib/version.dart b/mobx/lib/version.dart
index 416e1234e..ddccdbb3f 100644
--- a/mobx/lib/version.dart
+++ b/mobx/lib/version.dart
@@ -1,4 +1,4 @@
 // Generated via set_version.dart. !!!DO NOT MODIFY BY HAND!!!
 
 /// The current version as per `pubspec.yaml`.
-const version = '2.1.1';
+const version = '2.1.2';
diff --git a/mobx/pubspec.yaml b/mobx/pubspec.yaml
index 3b85993d9..3112e93d3 100644
--- a/mobx/pubspec.yaml
+++ b/mobx/pubspec.yaml
@@ -1,5 +1,5 @@
 name: mobx
-version: 2.1.1
+version: 2.1.2
 description: "MobX is a library for reactively managing the state of your applications. Use the power of observables, actions, and reactions to supercharge your Dart and Flutter apps."
 
 homepage: https://github.com/mobxjs/mobx.dart
diff --git a/mobx/test/reaction_test.dart b/mobx/test/reaction_test.dart
index a920c1cce..e7816afdd 100644
--- a/mobx/test/reaction_test.dart
+++ b/mobx/test/reaction_test.dart
@@ -321,6 +321,21 @@ void main() {
 
         expect(reaction1.hasObservables, isTrue);
       });
+
+      test('when disposed, clearObservables', () {
+        final x = Observable(0);
+
+        final reaction = ReactionImpl(mainContext, () {}, name: 'test_reaction_1')
+        ..track(() => x.value + 1);
+        expect(reaction.hasObservables, isTrue);
+
+        reaction.dispose();
+        final prevDerivation =  reaction.startTracking();
+        reaction.endTracking(prevDerivation);
+
+        expect(reaction.hasObservables, isFalse);
+
+      });
     });
   });
 }