diff --git a/pkg/analyzer_cli/pubspec.yaml b/pkg/analyzer_cli/pubspec.yaml
index 3ed73ab0283..0f6d2a1e1b1 100644
--- a/pkg/analyzer_cli/pubspec.yaml
+++ b/pkg/analyzer_cli/pubspec.yaml
@@ -5,7 +5,7 @@ description: Command line interface for the Dart Analyzer.
 publish_to: none
 
 environment:
-  sdk: ^3.9.0
+  sdk: '^3.12.0-0'
 
 resolution: workspace
 
diff --git a/pkg/frontend_server/pubspec.yaml b/pkg/frontend_server/pubspec.yaml
index cd75f820f94..bbc782c353b 100644
--- a/pkg/frontend_server/pubspec.yaml
+++ b/pkg/frontend_server/pubspec.yaml
@@ -4,7 +4,7 @@ description: A resident kernel compiler
 publish_to: none
 
 environment:
-  sdk: ^3.5.0
+  sdk: '^3.12.0-0'
 
 resolution: workspace
 
diff --git a/pkg/testing/lib/src/zone_helper.dart b/pkg/testing/lib/src/zone_helper.dart
index 040616142c2..1c1a1cb1e14 100644
--- a/pkg/testing/lib/src/zone_helper.dart
+++ b/pkg/testing/lib/src/zone_helper.dart
@@ -21,7 +21,7 @@ Future runGuarded(
 }) {
   PrintHandler? printWrapper;
   if (printLineOnStdout != null) {
-    printWrapper = (_, __, ___, String line) {
+    printWrapper = (_, _, _, String line) {
       printLineOnStdout(line);
     };
   }
diff --git a/pkg/testing/pubspec.yaml b/pkg/testing/pubspec.yaml
index 5dadc4bc21d..131abb09b69 100644
--- a/pkg/testing/pubspec.yaml
+++ b/pkg/testing/pubspec.yaml
@@ -5,7 +5,7 @@ name: testing
 publish_to: none
 
 environment:
-  sdk: ^3.5.0
+  sdk: '^3.12.0-0'
 
 resolution: workspace