diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 5c562998..f1e2a07f 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -14,14 +14,10 @@ permissions: read-all
 jobs:
   build:
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        sdk: [2.12.0, dev]
-
     steps:
       - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
       - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
-
+        with:
+          sdk: dev
       - name: Run Presubmits
         run: tool/presubmit
diff --git a/built_value_generator/pubspec.yaml b/built_value_generator/pubspec.yaml
index 2f1173f4..345fe741 100644
--- a/built_value_generator/pubspec.yaml
+++ b/built_value_generator/pubspec.yaml
@@ -10,7 +10,7 @@ topics:
  - build-runner
 
 environment:
-  sdk: '>=3.6.0-edge <4.0.0'
+  sdk: '>=3.6.0-300.0.dev <4.0.0'
 
 dependencies:
   analyzer: '>=6.9.0 <7.0.0'