diff --git a/lib/gpu/lib/src/context.dart b/lib/gpu/lib/src/context.dart
index 1c1be14267fbb..a0efc586d16a1 100644
--- a/lib/gpu/lib/src/context.dart
+++ b/lib/gpu/lib/src/context.dart
@@ -8,7 +8,7 @@ import 'dart:nativewrappers';
 /// A handle to a graphics context. Used to create and manage GPU resources.
 ///
 /// To obtain the default graphics context, use [getContext].
-class GpuContext extends NativeFieldWrapperClass1 {
+base class GpuContext extends NativeFieldWrapperClass1 {
   /// Creates a new graphics context that corresponds to the default Impeller
   /// context.
   GpuContext._createDefault() {
diff --git a/lib/ui/experiments/gpu.dart b/lib/ui/experiments/gpu.dart
index 282f955e6658e..6b07dc65efc7b 100644
--- a/lib/ui/experiments/gpu.dart
+++ b/lib/ui/experiments/gpu.dart
@@ -147,7 +147,7 @@ class RasterPipeline {}
 /// A handle to a graphics context. Used to create and manage GPU resources.
 ///
 /// To obtain the default graphics context, use [getGpuContext].
-class GpuContext extends NativeFieldWrapperClass1 {
+base class GpuContext extends NativeFieldWrapperClass1 {
   /// Creates a new graphics context that corresponds to the default Impeller
   /// context.
   GpuContext._createDefault() {