diff --git a/.github/workflows/dart.yml b/.github/workflows/dart.yml
index 2621bc7..aec8772 100644
--- a/.github/workflows/dart.yml
+++ b/.github/workflows/dart.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     
     container:
-      image:  google/dart:2.7
+      image:  google/dart:2.8
     
     steps:
     - uses: actions/checkout@v1
diff --git a/pubspec.yaml b/pubspec.yaml
index e287702..bb4b9fb 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -4,7 +4,7 @@ version: 0.3.1
 homepage: https://github.com/authpass/kdbx.dart
 
 environment:
-  sdk: '>=2.7.0 <3.0.0'
+  sdk: '>=2.8.0 <3.0.0'
 
 dependencies:
 #  flutter: