diff --git a/src/nncf/onnx/graph/metatypes/groups.py b/src/nncf/onnx/graph/metatypes/groups.py
index 32d490b2ed2..d772624dd06 100644
--- a/src/nncf/onnx/graph/metatypes/groups.py
+++ b/src/nncf/onnx/graph/metatypes/groups.py
@@ -54,6 +54,7 @@
     onnx_metatypes.ONNXDepthwiseConvolutionMetatype,
     onnx_metatypes.ONNXConvolutionTransposeMetatype,
     onnx_metatypes.ONNXDeformableConvolutionMetatype,
+    onnx_metatypes.ONNXGroupConvolutionMetatype,
 ]
 
 LINEAR_OPERATIONS = [*CONVOLUTION_METATYPES, *MATMUL_METATYPES]
diff --git a/tests/post_training/pipelines/image_classification_timm.py b/tests/post_training/pipelines/image_classification_timm.py
index dee4326542d..8874ed20a57 100644
--- a/tests/post_training/pipelines/image_classification_timm.py
+++ b/tests/post_training/pipelines/image_classification_timm.py
@@ -52,8 +52,7 @@ def prepare_model(self) -> None:
                 self.dummy_tensor,
                 onnx_path,
                 export_params=True,
-                opset_version=13,
-                dynamo=False,
+                opset_version=18,
                 **additional_kwargs,
             )
             self.model = onnx.load(onnx_path)
diff --git a/tests/post_training/pipelines/image_classification_torchvision.py b/tests/post_training/pipelines/image_classification_torchvision.py
index 7fe8815edd4..995267f68a2 100644
--- a/tests/post_training/pipelines/image_classification_torchvision.py
+++ b/tests/post_training/pipelines/image_classification_torchvision.py
@@ -99,8 +99,7 @@ def prepare_model(self) -> None:
                 self.dummy_tensor,
                 onnx_path,
                 export_params=True,
-                opset_version=13,
-                dynamo=False,
+                opset_version=18,
                 **additional_kwargs,
             )
             self.model = onnx.load(onnx_path)
diff --git a/tests/post_training/requirements.txt b/tests/post_training/requirements.txt
index 44242158c47..7602099cea1 100644
--- a/tests/post_training/requirements.txt
+++ b/tests/post_training/requirements.txt
@@ -7,6 +7,7 @@ torch
 torchvision
 onnx
 onnxruntime
+onnxscript
 openvino
 pytest
 pytest-forked
@@ -25,3 +26,4 @@ timm==0.9.2
 accelerate==1.9.0
 transformers==4.53.0
 whowhatbench @ git+https://github.com/openvinotoolkit/openvino.genai@2025.4.1.0#subdirectory=tools/who_what_benchmark
+datasets