diff --git a/bin/cache/dart-sdk.version b/bin/cache/dart-sdk.version
index 452dd464cbc..20c4f32c405 100644
--- a/bin/cache/dart-sdk.version
+++ b/bin/cache/dart-sdk.version
@@ -1 +1 @@
-1.18.0-dev.4.4
+1.19.0-dev.0.0
diff --git a/examples/flutter_gallery/pubspec.yaml b/examples/flutter_gallery/pubspec.yaml
index 8e96bc78a43..72d4cb1916f 100644
--- a/examples/flutter_gallery/pubspec.yaml
+++ b/examples/flutter_gallery/pubspec.yaml
@@ -2,7 +2,7 @@ name: flutter_gallery
 dependencies:
   intl: '>=0.12.4+2 <0.13.0'
   collection: '>=1.4.0 <2.0.0'
-  string_scanner: '^0.1.5'
+  string_scanner: ^1.0.0
 
   flutter:
     path: ../../packages/flutter
diff --git a/packages/flutter_driver/pubspec.yaml b/packages/flutter_driver/pubspec.yaml
index b73c98d9e21..a42a9cb549a 100644
--- a/packages/flutter_driver/pubspec.yaml
+++ b/packages/flutter_driver/pubspec.yaml
@@ -20,6 +20,6 @@ dependencies:
     path: '../flutter_test'
 
 dev_dependencies:
-  test: 0.12.13+5
+  test: 0.12.15+1
   mockito: '^0.11.0'
   quiver: '^0.21.4'
diff --git a/packages/flutter_markdown/pubspec.yaml b/packages/flutter_markdown/pubspec.yaml
index dfde8e0ef28..6fe9faf26b4 100644
--- a/packages/flutter_markdown/pubspec.yaml
+++ b/packages/flutter_markdown/pubspec.yaml
@@ -8,7 +8,7 @@ dependencies:
   flutter:
     path: ../flutter
   markdown: '^0.9.0'
-  string_scanner: '^0.1.5'
+  string_scanner: ^1.0.0
 
 dev_dependencies:
   flutter_test:
diff --git a/packages/flutter_test/pubspec.yaml b/packages/flutter_test/pubspec.yaml
index 00809fbc1da..1f98b7a0163 100644
--- a/packages/flutter_test/pubspec.yaml
+++ b/packages/flutter_test/pubspec.yaml
@@ -5,12 +5,12 @@ dependencies:
   # The flutter tools depend on very specific internal implementation
   # details of the 'test' package, which change between versions, so
   # here we pin it precisely to avoid version skew across our packages.
-  test: 0.12.13+5
+  test: 0.12.15+1
 
   # We don't actually depend on 'analyzer', but 'test' and 'flutter_tools' do.
   # We pin the version of analyzer we depend on to avoid version skew across our
   # packages.
-  analyzer: 0.27.4-alpha.16
+  analyzer: 0.27.4-alpha.19
 
   flutter:
     path: ../flutter
diff --git a/packages/flutter_tools/lib/src/commands/test.dart b/packages/flutter_tools/lib/src/commands/test.dart
index bc1096580ff..377462da200 100644
--- a/packages/flutter_tools/lib/src/commands/test.dart
+++ b/packages/flutter_tools/lib/src/commands/test.dart
@@ -47,7 +47,6 @@ class TestCommand extends FlutterCommand {
   @override
   bool get requiresProjectRoot => false;
 
-  @override
   Validator projectRootValidator = () {
     if (!FileSystemEntity.isFileSync('pubspec.yaml')) {
       printError(
diff --git a/packages/flutter_tools/lib/src/runner/flutter_command.dart b/packages/flutter_tools/lib/src/runner/flutter_command.dart
index e127df209ee..1e63160ad93 100644
--- a/packages/flutter_tools/lib/src/runner/flutter_command.dart
+++ b/packages/flutter_tools/lib/src/runner/flutter_command.dart
@@ -214,7 +214,7 @@ abstract class FlutterCommand extends Command {
 
   Future<int> runInProject();
 
-  // This is caculated in run() if the command has [requiresDevice] specified.
+  // This is calculated in run() if the command has [requiresDevice] specified.
   Device _deviceForCommand;
 
   Device get deviceForCommand => _deviceForCommand;
diff --git a/packages/flutter_tools/pubspec.yaml b/packages/flutter_tools/pubspec.yaml
index ed3fe20b510..5634f8dab2f 100644
--- a/packages/flutter_tools/pubspec.yaml
+++ b/packages/flutter_tools/pubspec.yaml
@@ -36,10 +36,10 @@ dependencies:
   # We depend on very specific internal implementation details of the
   # 'test' package, which change between versions, so here we pin it
   # precisely.
-  test: 0.12.13+5
+  test: 0.12.15+1
 
   # Pinned in flutter_test as well.
-  analyzer: 0.27.4-alpha.16
+  analyzer: 0.27.4-alpha.19
 
 dev_dependencies:
   mockito: ^0.11.0