diff --git a/builtin_op_importers.cpp b/builtin_op_importers.cpp
index ef134ffa..2ca1ac3d 100644
--- a/builtin_op_importers.cpp
+++ b/builtin_op_importers.cpp
@@ -1816,25 +1816,41 @@ DEFINE_BUILTIN_OP_IMPORTER(Unsqueeze) {
 
 DEFINE_BUILTIN_OP_IMPORTER(Upsample) {
   ASSERT(inputs.at(0).is_tensor(), ErrorCode::kUNSUPPORTED_NODE);
-  nvinfer1::ITensor& tensor = inputs.at(0).tensor();
+  nvinfer1::ITensor &tensor = inputs.at(0).tensor();
   ASSERT(tensor.getDimensions().nbDims == 3, ErrorCode::kUNSUPPORTED_NODE);
   OnnxAttrs attrs(node);
   float height_scale, width_scale;
-  if( !attrs.count("scales") ) {
-    height_scale = attrs.get<float>("height_scale");
-    width_scale  = attrs.get<float>("width_scale");
+  if (ctx->getOpsetVersion() >= 9) {
+    ASSERT(inputs.size() == 2, ErrorCode::kINVALID_NODE);
+    auto scales_input = inputs.at(1);
+    ASSERT(scales_input.is_weights(), ErrorCode::kUNSUPPORTED_NODE);
+    ShapedWeights scales_weights = scales_input.weights();
+    ASSERT(scales_weights.shape.nbDims == 1, ErrorCode::kUNSUPPORTED_NODE);
+    ASSERT(scales_weights.count() == 4, ErrorCode::kUNSUPPORTED_NODE);
+    ASSERT(scales_weights.type == ::ONNX_NAMESPACE::TensorProto::FLOAT,
+           ErrorCode::kINVALID_NODE);
+    float const *scales_ptr = static_cast<float const *>(scales_weights.values);
+    ASSERT(scales_ptr[0] == 1 && scales_ptr[1] == 1,
+           ErrorCode::kUNSUPPORTED_NODE);
+    height_scale = scales_ptr[2];
+    width_scale = scales_ptr[3];
   } else {
-    auto scales = attrs.get<std::vector<float>>("scales");
-    ASSERT(scales.size() == 4, ErrorCode::kUNSUPPORTED_NODE);
-    ASSERT(scales[0] == 1 && scales[1] == 1, ErrorCode::kUNSUPPORTED_NODE);
-    height_scale = scales[2];
-    width_scale  = scales[3];
+    if (!attrs.count("scales")) {
+      height_scale = attrs.get<float>("height_scale");
+      width_scale = attrs.get<float>("width_scale");
+    } else {
+      auto scales = attrs.get<std::vector<float>>("scales");
+      ASSERT(scales.size() == 4, ErrorCode::kUNSUPPORTED_NODE);
+      ASSERT(scales[0] == 1 && scales[1] == 1, ErrorCode::kUNSUPPORTED_NODE);
+      height_scale = scales[2];
+      width_scale = scales[3];
+    }
   }
   auto scale = {height_scale, width_scale};
   auto mode = attrs.get<std::string>("mode", "nearest");
   ASSERT(mode == "nearest", ErrorCode::kUNSUPPORTED_NODE);
-  RETURN_FIRST_OUTPUT(ctx->addPlugin(new ResizeNearestPlugin(scale),
-                                     {&inputs.at(0).tensor()}));
+  RETURN_FIRST_OUTPUT(
+      ctx->addPlugin(new ResizeNearestPlugin(scale), {&inputs.at(0).tensor()}));
 }
 
 } // namespace