diff --git a/imperative/python/test/unit/utils/test_network_node.py b/imperative/python/test/unit/utils/test_network_node.py
index 62896badf5d1734352cf73c12976fb17cf6bca89..d293c3c475f59b42e34c91f42ff649e198eb7c4f 100644
--- a/imperative/python/test/unit/utils/test_network_node.py
+++ b/imperative/python/test/unit/utils/test_network_node.py
@@ -14,6 +14,7 @@ from megengine.core._imperative_rt.core2 import apply
 from megengine.core._wrap import Device
 from megengine.core.ops import builtin
 from megengine.device import is_cuda_available
+from megengine.distributed.helper import get_device_count_by_fork
 from megengine.functional.external import tensorrt_runtime_opr
 from megengine.jit.tracing import trace
 from megengine.tensor import Tensor
@@ -265,6 +266,10 @@ def test_deformable_ps_roi_pooling():
     check_pygraph_dump(fwd, [inp, rois, trans], [result])
 
 
+@pytest.mark.skipif(
+    get_device_count_by_fork("gpu") > 0,
+    reason="does not support int8 when gpu compute capability less than 6.1",
+)
 def test_convbias():
     @trace(symbolic=True, capture_as_const=True)
     def fwd(inp, weight, bias):