diff --git a/requirements/rocm.txt b/requirements/rocm.txt
index 9f2b39199..fcc67e463 100644
--- a/requirements/rocm.txt
+++ b/requirements/rocm.txt
@@ -19,4 +19,7 @@ setuptools>=77.0.3,<80.0.0
 setuptools-scm>=8
 runai-model-streamer[s3,gcs]==0.15.3
 conch-triton-kernels==1.2.1
-timm>=1.0.17
\ No newline at end of file
+timm>=1.0.17
+# amd-quark: required for Quark quantization on ROCm 
+# To be consistent with test_quark.py
+amd-quark>=0.8.99
\ No newline at end of file
diff --git a/tests/quantization/test_quark.py b/tests/quantization/test_quark.py
index 0ff6e8407..a560494a4 100644
--- a/tests/quantization/test_quark.py
+++ b/tests/quantization/test_quark.py
@@ -26,9 +26,12 @@ from vllm.platforms import current_platform
 
 from .reference_mxfp4 import dq_mxfp4_torch, qdq_mxfp4_torch
 
+# Minimum amd-quark version for MXFP4/OCP_MX tests (single source of truth).
+QUARK_MXFP4_MIN_VERSION = "0.8.99"
+
 QUARK_MXFP4_AVAILABLE = find_spec("quark") is not None and version.parse(
     importlib.metadata.version("amd-quark")
-) >= version.parse("0.8.99")
+) >= version.parse(QUARK_MXFP4_MIN_VERSION)
 
 if QUARK_MXFP4_AVAILABLE:
     from quark.torch.export.nn.modules.realquantizer import StaticScaledRealQuantizer
@@ -200,7 +203,10 @@ WIKITEXT_ACCURACY_CONFIGS = [
 ]
 
 
-@pytest.mark.skipif(not QUARK_MXFP4_AVAILABLE, reason="amd-quark>=0.9 is not available")
+@pytest.mark.skipif(
+    not QUARK_MXFP4_AVAILABLE,
+    reason=f"amd-quark>={QUARK_MXFP4_MIN_VERSION} is not available",
+)
 @pytest.mark.parametrize("config", WIKITEXT_ACCURACY_CONFIGS)
 @pytest.mark.parametrize("tp_size", [1, 2])
 def test_ocp_mx_wikitext_correctness(config: AccuracyTestConfig, tp_size: int):
@@ -231,7 +237,10 @@ def test_ocp_mx_wikitext_correctness(config: AccuracyTestConfig, tp_size: int):
 
 
 @pytest.mark.parametrize("config", GSM8K_ACCURACY_CONFIGS)
-@pytest.mark.skipif(not QUARK_MXFP4_AVAILABLE, reason="amd-quark>=0.9 is not available")
+@pytest.mark.skipif(
+    not QUARK_MXFP4_AVAILABLE,
+    reason=f"amd-quark>={QUARK_MXFP4_MIN_VERSION} is not available",
+)
 @pytest.mark.skipif(
     not HF_HUB_AMD_ORG_ACCESS,
     reason="Read access to huggingface.co/amd is required for this test.",
@@ -261,7 +270,10 @@ def test_mxfp4_gsm8k_correctness(config: AccuracyTestConfig):
     ), f"Expected: {EXPECTED_VALUE} |  Measured: {measured_value}"
 
 
-@pytest.mark.skipif(not QUARK_MXFP4_AVAILABLE, reason="amd-quark>=0.9 is not available")
+@pytest.mark.skipif(
+    not QUARK_MXFP4_AVAILABLE,
+    reason=f"amd-quark>={QUARK_MXFP4_MIN_VERSION} is not available",
+)
 @pytest.mark.parametrize("float_dtype", [torch.bfloat16, torch.float16])
 @pytest.mark.parametrize("scalings", [[2.3, 0.03, 7.3, 0.1, 0.004, 17.3, 1e4, 1e-4]])
 def test_mxfp4_fused_qdq_match_quark(float_dtype: torch.dtype, scalings: list[int]):
@@ -289,7 +301,10 @@ def test_mxfp4_fused_qdq_match_quark(float_dtype: torch.dtype, scalings: list[in
         )
 
 
-@pytest.mark.skipif(not QUARK_MXFP4_AVAILABLE, reason="amd-quark>=0.9 is not available")
+@pytest.mark.skipif(
+    not QUARK_MXFP4_AVAILABLE,
+    reason=f"amd-quark>={QUARK_MXFP4_MIN_VERSION} is not available",
+)
 @pytest.mark.parametrize("float_dtype", [torch.bfloat16, torch.float16])
 @pytest.mark.parametrize("scalings", [[2.3, 0.03, 7.3, 0.1, 0.004, 17.3, 1e4, 1e-4]])
 def test_mxfp4_dequant_kernel_match_quark(