diff --git a/python/sglang/srt/parser/reasoning_parser.py b/python/sglang/srt/parser/reasoning_parser.py
index 2aefeedb1..9317fe77b 100644
--- a/python/sglang/srt/parser/reasoning_parser.py
+++ b/python/sglang/srt/parser/reasoning_parser.py
@@ -291,6 +291,7 @@ class ReasoningParser:
         "glm45": Qwen3Detector,
         "gpt-oss": GptOssDetector,
         "kimi": KimiDetector,
+        "kimi_k2": DeepSeekR1Detector,
         "qwen3": Qwen3Detector,
         "qwen3-thinking": Qwen3Detector,
         "minimax": Qwen3Detector,