diff --git a/AUTHORS b/AUTHORS
index 5df0e03f..dbb8f5bc 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -6,3 +6,4 @@
 Google Inc.
 Abhijeeth Padarthi <rkinabhi@gmail.com>
 Alex Li <alexv.525.li@gmail.com>
+Clay Harris <rcharris42@gmail.com>
\ No newline at end of file
diff --git a/packages/scrollable_positioned_list/example/test/scrollable_positioned_list_example_test.dart b/packages/scrollable_positioned_list/example/test/scrollable_positioned_list_example_test.dart
index a278d3cc..64cd9ce4 100644
--- a/packages/scrollable_positioned_list/example/test/scrollable_positioned_list_example_test.dart
+++ b/packages/scrollable_positioned_list/example/test/scrollable_positioned_list_example_test.dart
@@ -11,8 +11,8 @@ import 'package:scrollable_positioned_list_example/main.dart';
 
 void main() {
   setUp(() {
-    WidgetsBinding.instance.renderView.configuration = TestViewConfiguration(
-        size: const Size(800, 900), window: RendererBinding.instance.window);
+    WidgetsBinding.instance!.renderView.configuration = TestViewConfiguration(
+        size: const Size(800, 900), window: RendererBinding.instance!.window);
   });
 
   testWidgets('Start at 0', (WidgetTester tester) async {
diff --git a/packages/scrollable_positioned_list/lib/src/positioned_list.dart b/packages/scrollable_positioned_list/lib/src/positioned_list.dart
index 44f72e48..62277fee 100644
--- a/packages/scrollable_positioned_list/lib/src/positioned_list.dart
+++ b/packages/scrollable_positioned_list/lib/src/positioned_list.dart
@@ -308,7 +308,7 @@ class _PositionedListState extends State<PositionedList> {
   void _schedulePositionNotificationUpdate() {
     if (!updateScheduled) {
       updateScheduled = true;
-      SchedulerBinding.instance.addPostFrameCallback((_) {
+      SchedulerBinding.instance!.addPostFrameCallback((_) {
         if (registeredElements.value == null) {
           updateScheduled = false;
           return;
diff --git a/packages/scrollable_positioned_list/lib/src/scrollable_positioned_list.dart b/packages/scrollable_positioned_list/lib/src/scrollable_positioned_list.dart
index cbcac7ad..b89bbf4b 100644
--- a/packages/scrollable_positioned_list/lib/src/scrollable_positioned_list.dart
+++ b/packages/scrollable_positioned_list/lib/src/scrollable_positioned_list.dart
@@ -435,7 +435,7 @@ class _ScrollablePositionedListState extends State<ScrollablePositionedList>
     }
     if (_isTransitioning) {
       _stopScroll(canceled: true);
-      SchedulerBinding.instance.addPostFrameCallback((_) {
+      SchedulerBinding.instance!.addPostFrameCallback((_) {
         _startScroll(
           index: index,
           alignment: alignment,
@@ -482,7 +482,7 @@ class _ScrollablePositionedListState extends State<ScrollablePositionedList>
       final startCompleter = Completer<void>();
       final endCompleter = Completer<void>();
       startAnimationCallback = () {
-        SchedulerBinding.instance.addPostFrameCallback((_) {
+        SchedulerBinding.instance!.addPostFrameCallback((_) {
           startAnimationCallback = () {};
 
           opacity.parent = _opacityAnimation(opacityAnimationWeights).animate(
diff --git a/packages/scrollable_positioned_list/pubspec.yaml b/packages/scrollable_positioned_list/pubspec.yaml
index b2ac8b02..72a4e873 100644
--- a/packages/scrollable_positioned_list/pubspec.yaml
+++ b/packages/scrollable_positioned_list/pubspec.yaml
@@ -1,5 +1,5 @@
 name: scrollable_positioned_list
-version: 0.3.0
+version: 0.3.1
 description: >
   A list with helper methods to programmatically scroll to an item.
 homepage: https://github.com/google/flutter.widgets/tree/master/packages/scrollable_positioned_list
diff --git a/packages/scrollable_positioned_list/test/scrollable_positioned_list_test.dart b/packages/scrollable_positioned_list/test/scrollable_positioned_list_test.dart
index f41cc3ad..7e72934d 100644
--- a/packages/scrollable_positioned_list/test/scrollable_positioned_list_test.dart
+++ b/packages/scrollable_positioned_list/test/scrollable_positioned_list_test.dart
@@ -1279,7 +1279,7 @@ void main() {
     await setUpWidgetTest(tester, itemPositionsListener: itemPositionsListener);
 
     final root = WidgetsBinding
-        .instance.pipelineOwner.semanticsOwner!.rootSemanticsNode!;
+        .instance!.pipelineOwner.semanticsOwner!.rootSemanticsNode!;
 
     final semanticNodes = <SemanticsNode>[root];