diff --git a/pubspec.yaml b/pubspec.yaml
index 951a157..f1f14de 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,7 +1,7 @@
 name: flutter_single_instance
 description: A simple way to check if your application is already running.
 
-version: 1.5.0
+version: 1.5.1
 repository: https://github.com/necodeIT/flutter_single_instance
 platforms:
   linux:
@@ -21,8 +21,8 @@ dependencies:
   json_annotation: ^4.9.0
   logging: ^1.3.0
   path_provider: ^2.0.13
-  protobuf: ^3.1.0
-  window_manager: ^0.4.3
+  protobuf: ^4.1.0
+  window_manager: ^0.5.0
 
 dev_dependencies:
   build_runner: ^2.4.14