diff --git a/src/backends/backend_util.ts b/src/backends/backend_util.ts
index 34ab4f75e7..3de503109d 100644
--- a/src/backends/backend_util.ts
+++ b/src/backends/backend_util.ts
@@ -28,7 +28,9 @@ export * from '../ops/axis_util';
 export * from '../ops/broadcast_util';
 export * from '../ops/concat_util';
 export * from '../ops/conv_util';
-export {TypedArray, upcastType, PixelData} from '../types';
+export {Activation} from '../ops/fused_util';
+
+export {BackendValues, TypedArray, upcastType, PixelData} from '../types';
 export {MemoryInfo, TimingInfo} from '../engine';
 
 export function castTensor<T extends Tensor>(
diff --git a/src/index.ts b/src/index.ts
index 15c34a75af..453925df6f 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -53,7 +53,7 @@ export {MomentumOptimizer} from './optimizers/momentum_optimizer';
 export {Optimizer} from './optimizers/optimizer';
 export {RMSPropOptimizer} from './optimizers/rmsprop_optimizer';
 export {SGDOptimizer} from './optimizers/sgd_optimizer';
-export {Scalar, Tensor, Tensor1D, Tensor2D, Tensor3D, Tensor4D, TensorBuffer, variable, Variable} from './tensor';
+export {Scalar, Tensor, Tensor1D, Tensor2D, Tensor3D, Tensor4D, Tensor5D, TensorBuffer, variable, Variable} from './tensor';
 export {GradSaveFunc, NamedTensorMap, TensorContainer, TensorContainerArray, TensorContainerObject} from './tensor_types';
 export {DataType, DataTypeMap, DataValues, Rank, ShapeMap, TensorLike} from './types';