diff --git a/ci_build/azure_pipelines/trimmed_keras2onnx_application_tests.yml b/ci_build/azure_pipelines/trimmed_keras2onnx_application_tests.yml
index a789f84fe..183b2fcfe 100644
--- a/ci_build/azure_pipelines/trimmed_keras2onnx_application_tests.yml
+++ b/ci_build/azure_pipelines/trimmed_keras2onnx_application_tests.yml
@@ -47,7 +47,7 @@ jobs:
 
       Python38-tf2-2.11:
         python.version: '3.9'
-        ONNX_PATH: onnx==1.13.1
+        ONNX_PATH: onnx==1.14
         INSTALL_KERAS:
         UNINSTALL_KERAS:
         INSTALL_TENSORFLOW: pip install tensorflow==2.11.0
diff --git a/ci_build/azure_pipelines/trimmed_keras2onnx_unit_test.yml b/ci_build/azure_pipelines/trimmed_keras2onnx_unit_test.yml
index 6bd232cb0..36008fd49 100644
--- a/ci_build/azure_pipelines/trimmed_keras2onnx_unit_test.yml
+++ b/ci_build/azure_pipelines/trimmed_keras2onnx_unit_test.yml
@@ -25,7 +25,7 @@ jobs:
 
       Python310-tf-latest:
         python.version: '3.10'
-        ONNX_PATH: onnx==1.13.1
+        ONNX_PATH: onnx==1.14
         TENSORFLOW_PATH: tensorflow==2.11.0
         INSTALL_ORT: pip install onnxruntime==1.13.1
         INSTALL_NUMPY:
@@ -66,7 +66,7 @@ jobs:
 
       Python310-tf-latest:
         python.version: '3.10'
-        ONNX_PATH: onnx==1.13.1
+        ONNX_PATH: onnx==1.14
         TENSORFLOW_PATH: tensorflow==2.11.0
         INSTALL_ORT: pip install onnxruntime==1.14.1
         INSTALL_NUMPY:
diff --git a/setup.py b/setup.py
index 598f08c91..fcb31c3b3 100644
--- a/setup.py
+++ b/setup.py
@@ -82,7 +82,7 @@ def run(self):
     author='ONNX',
     author_email='onnx-technical-discuss@lists.lfaidata.foundation',
     url='https://github.com/onnx/tensorflow-onnx',
-    install_requires=['numpy>=1.14.1', 'onnx>=1.4.1', 'requests', 'six', 'flatbuffers<3.0,>=1.12'],
+    install_requires=['numpy>=1.14.1', 'onnx>=1.4.1', 'requests', 'six', 'flatbuffers<3.0,>=1.12', 'protobuf~=3.20.2'],
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'Intended Audience :: Developers',
diff --git a/tests/keras2onnx_applications/nightly_build/test_chatbot.py b/tests/keras2onnx_applications/nightly_build/test_chatbot.py
index e7bf05e46..abac15857 100644
--- a/tests/keras2onnx_applications/nightly_build/test_chatbot.py
+++ b/tests/keras2onnx_applications/nightly_build/test_chatbot.py
@@ -9,7 +9,7 @@
 from mock_keras2onnx.proto.tfcompat import is_tf2
 from os.path import dirname, abspath
 sys.path.insert(0, os.path.join(dirname(abspath(__file__)), '../../keras2onnx_tests/'))
-from test_utils import run_keras_and_ort, test_level_0
+from test_utils import run_keras_and_ort, test_level_0, get_max_opset_supported_for_test
 K = keras.backend
 
 Activation = keras.layers.Activation
@@ -96,7 +96,7 @@ def test_chatbot(self):
         data1 = np.random.rand(2, 12).astype(np.float32)
         data2 = np.random.rand(2, 12).astype(np.float32)
         expected = keras_model.predict([data1, data2])
-        onnx_model = mock_keras2onnx.convert_keras(keras_model, keras_model.name)
+        onnx_model = mock_keras2onnx.convert_keras(keras_model, keras_model.name, target_opset=get_max_opset_supported_for_test())
         self.assertTrue(
             run_keras_and_ort(onnx_model.graph.name, onnx_model, keras_model, [data1, data2], expected, self.model_files))
 
diff --git a/tests/keras2onnx_unit_tests/test_utils.py b/tests/keras2onnx_unit_tests/test_utils.py
index e596b831d..82b5e1098 100644
--- a/tests/keras2onnx_unit_tests/test_utils.py
+++ b/tests/keras2onnx_unit_tests/test_utils.py
@@ -299,7 +299,7 @@ def run_image(model, model_files, img_path, model_name='onnx_conversion', rtol=1
     except RuntimeError:
         msg = 'keras prediction throws an exception for model ' + model.name + ', skip comparison.'
 
-    onnx_model = mock_keras2onnx.convert_keras(model, model.name)
+    onnx_model = mock_keras2onnx.convert_keras(model, model.name, target_opset=get_max_opset_supported_for_test())
     res = run_onnx_runtime(model_name, onnx_model, x, preds, model_files, rtol=rtol, atol=atol, compare_perf=compare_perf)
     return res, msg