diff --git a/pubspec.yaml b/pubspec.yaml
index 64f2038..94be75f 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -6,12 +6,12 @@ description: Reactive Extensions Library for Dart providing an API for asynchron
   with observable streams.
 
 environment:
-  sdk: '>=2.17.0 <3.0.0'
+  sdk: '>=2.19.0 <3.0.0'
 dependencies:
   collection: ^1.17.0
   matcher: ^0.12.0
-  meta: ^1.8.0
-  more: ^3.8.0
+  meta: ^1.9.0
+  more: ^3.10.0
 dev_dependencies:
   lints: ^2.0.0
-  test: ^1.21.0
+  test: ^1.24.0