diff --git a/build-for-1.9.0.sh b/build-for-1.9.0.sh
new file mode 100755
index 0000000000..2ae0273c24
--- /dev/null
+++ b/build-for-1.9.0.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+
+set -ex
+
+if [ ! -f ./setup.py || -f ./sherpa-onnx/c-api/c-api.h || ! -f ./android/SherpaOnnx ]; then
+  echo "please run this script inside the sherpa-onnx directory"
+  exit 1
+fi
+
+if [ ! -d /Users/fangjun/t/onnxruntime-osx-x64-1.9.0/lib ]; then
+  mkdir -p /Users/fangjun/t
+  pushd /Users/fangjun/t
+  wget https://github.com/microsoft/onnxruntime/releases/download/v1.9.0/onnxruntime-osx-x64-1.9.0.tgz
+  tar xvf onnxruntime-osx-x64-1.9.0.tgz
+  rm onnxruntime-osx-x64-1.9.0.tgz
+  popd
+fi
+
+export SHERPA_ONNXRUNTIME_LIB_DIR=/Users/fangjun/t/onnxruntime-osx-x64-1.9.0/lib
+export SHERPA_ONNXRUNTIME_INCLUDE_DIR=/Users/fangjun/t/onnxruntime-osx-x64-1.9.0/include
+
+mkdir -p ./build-1.9.0
+cd ./build-1.9.0
+cmake -DBUILD_SHARED_LIBS=ON ..
+make
diff --git a/sherpa-onnx/csrc/provider-config.h b/sherpa-onnx/csrc/provider-config.h
index 4c9c0db015..79d9cb2b94 100644
--- a/sherpa-onnx/csrc/provider-config.h
+++ b/sherpa-onnx/csrc/provider-config.h
@@ -14,7 +14,11 @@
 namespace sherpa_onnx {
 
 struct CudaConfig {
+#if ORT_API_VERSION >= 10
   int32_t cudnn_conv_algo_search = OrtCudnnConvAlgoSearchHeuristic;
+#else
+  int32_t cudnn_conv_algo_search = 1;
+#endif
 
   CudaConfig() = default;
   explicit CudaConfig(int32_t cudnn_conv_algo_search)
diff --git a/sherpa-onnx/csrc/session.cc b/sherpa-onnx/csrc/session.cc
index a33594f0b5..9adbb9db93 100644
--- a/sherpa-onnx/csrc/session.cc
+++ b/sherpa-onnx/csrc/session.cc
@@ -11,7 +11,7 @@
 
 #include "sherpa-onnx/csrc/macros.h"
 #include "sherpa-onnx/csrc/provider.h"
-#if defined(__APPLE__)
+#if defined(__APPLE__) && (ORT_API_VERSION >= 10)
 #include "coreml_provider_factory.h"  // NOLINT
 #endif
 
@@ -76,9 +76,10 @@ Ort::SessionOptions GetSessionOptionsImpl(
       break;
     }
     case Provider::kTRT: {
+#if ORT_API_VERSION >= 10
       if (provider_config == nullptr) {
         SHERPA_ONNX_LOGE(
-            "Tensorrt support for Online models ony,"
+            "Tensorrt support for Online models only,"
             "Must be extended for offline and others");
         exit(1);
       }
@@ -151,6 +152,12 @@ Ort::SessionOptions GetSessionOptionsImpl(
       }
       // break; is omitted here intentionally so that
       // if TRT not available, CUDA will be used
+#else
+      SHERPA_ONNX_LOGE(
+          "Tensorrt is not supported. Version of onnxruntime %d is too old. "
+          "Fallback to cuda provider",
+          static_cast<int32_t>(ORT_API_VERSION));
+#endif
     }
     case Provider::kCUDA: {
       if (std::find(available_providers.begin(), available_providers.end(),
@@ -165,7 +172,11 @@ Ort::SessionOptions GetSessionOptionsImpl(
         } else {
           options.device_id = 0;
           // Default OrtCudnnConvAlgoSearchExhaustive is extremely slow
+#if ORT_API_VERSION >= 10
           options.cudnn_conv_algo_search = OrtCudnnConvAlgoSearchHeuristic;
+#else
+          options.cudnn_conv_algo_search = OrtCudnnConvAlgoSearch(1);
+#endif
           // set more options on need
         }
         sess_opts.AppendExecutionProvider_CUDA(options);
@@ -196,7 +207,7 @@ Ort::SessionOptions GetSessionOptionsImpl(
       break;
     }
     case Provider::kCoreML: {
-#if defined(__APPLE__)
+#if defined(__APPLE__) && (ORT_API_VERSION >= 10)
       uint32_t coreml_flags = 0;
       (void)OrtSessionOptionsAppendExecutionProvider_CoreML(sess_opts,
                                                             coreml_flags);