diff --git a/tensorrt_llm/tokenizer/tokenizer.py b/tensorrt_llm/tokenizer/tokenizer.py
index d08cb9ed5a42..f681b5496527 100644
--- a/tensorrt_llm/tokenizer/tokenizer.py
+++ b/tensorrt_llm/tokenizer/tokenizer.py
@@ -10,6 +10,19 @@
 from .._utils import nvtx_range_debug
 from ..logger import logger
 
+# Transformers 5.x moved ``bytes_to_unicode`` out of
+# ``transformers.models.gpt2.tokenization_gpt2`` into
+# ``transformers.convert_slow_tokenizer``. Some ``trust_remote_code=True``
+# checkpoints (e.g. Kimi-K2's ``tokenization_kimi.py``) still import it from
+# the legacy location; re-export the symbol so those tokenizers keep loading.
+try:
+    from transformers.models.gpt2 import tokenization_gpt2 as _gpt2_mod
+    if not hasattr(_gpt2_mod, "bytes_to_unicode"):
+        from transformers.convert_slow_tokenizer import bytes_to_unicode
+        _gpt2_mod.bytes_to_unicode = bytes_to_unicode
+except ImportError:
+    pass
+
 # Aliases for built-in custom tokenizers.
 TOKENIZER_ALIASES = {
     "deepseek_v32": "tensorrt_llm.tokenizer.deepseek_v32.DeepseekV32Tokenizer",
diff --git a/tests/integration/test_lists/waives.txt b/tests/integration/test_lists/waives.txt
index 923063a16176..26ea91b9d458 100644
--- a/tests/integration/test_lists/waives.txt
+++ b/tests/integration/test_lists/waives.txt
@@ -95,8 +95,6 @@ accuracy/test_llm_api_pytorch.py::TestGPTOSS::test_w4_4gpus[v2_kv_cache-ep4-cutl
 accuracy/test_llm_api_pytorch.py::TestGPTOSS::test_w4_4gpus[v2_kv_cache-tp4-cutlass-auto] SKIP (https://nvbugs/5596343)
 accuracy/test_llm_api_pytorch.py::TestGPTOSS::test_w4_chunked_prefill[cutlass-auto] SKIP (https://nvbugs/5596343)
 accuracy/test_llm_api_pytorch.py::TestKanana_Instruct::test_auto_dtype SKIP (https://nvbugs/6209806)
-accuracy/test_llm_api_pytorch.py::TestKimiK2::test_nvfp4_longseq_trtllm_moe_async_cancel SKIP (https://nvbugs/6160085)
-accuracy/test_llm_api_pytorch.py::TestKimiK2::test_nvfp4_longseq_trtllm_moe_stress SKIP (https://nvbugs/6160085)
 accuracy/test_llm_api_pytorch.py::TestLlama3_1_8BInstruct::test_auto_dtype_beam_search[enable_cuda_graph=False-enable_padding=False-disable_overlap_scheduler=False-sampler_async_worker=False] SKIP (https://nvbugs/6141653)
 accuracy/test_llm_api_pytorch.py::TestLlama3_1_8BInstruct::test_auto_dtype_beam_search[enable_cuda_graph=False-enable_padding=False-disable_overlap_scheduler=True-sampler_async_worker=False] SKIP (https://nvbugs/6141653)
 accuracy/test_llm_api_pytorch.py::TestLlama3_1_8BInstruct::test_auto_dtype_beam_search[enable_cuda_graph=True-enable_padding=False-disable_overlap_scheduler=False-sampler_async_worker=False] SKIP (https://nvbugs/6141653)