diff --git a/benchmarks/single_node/agentic/dsv4_fp4_mi355x_vllm.sh b/benchmarks/single_node/agentic/dsv4_fp4_mi355x_vllm.sh
index e6cc14cb7..5d73ba00b 100644
--- a/benchmarks/single_node/agentic/dsv4_fp4_mi355x_vllm.sh
+++ b/benchmarks/single_node/agentic/dsv4_fp4_mi355x_vllm.sh
@@ -276,8 +276,7 @@ EOF
 
         git clone https://github.com/LMCache/LMCache.git
         cd LMCache
-        # https://github.com/LMCache/LMCache/pull/3853
-        git checkout 9229067cec0b3a63bb8a39368d101db7ac0bc3c1
+        git checkout v0.5.1
         pip install -r requirements/build.txt
         pip install grpcio==1.78.0
         CXX=hipcc BUILD_WITH_HIP=1 pip install -e .   --no-build-isolation
@@ -330,6 +329,8 @@ EOF
             --max-workers "$LMCACHE_MAX_WORKERS"
             --eviction-policy LRU
             --supported-transfer-mode "$LMCACHE_TX_MODE"
+            --no-separate-object-group
+            --no-l1-use-lazy
         )
         printf '%q ' "${LMCACHE_CMD[@]}" > "$RESULT_DIR/lmcache_command.txt"
         printf '\n' >> "$RESULT_DIR/lmcache_command.txt"
diff --git a/perf-changelog.yaml b/perf-changelog.yaml
index d77c35f1f..f20628485 100644
--- a/perf-changelog.yaml
+++ b/perf-changelog.yaml
@@ -4781,3 +4781,10 @@
     - "Bump image to lmsysorg/sglang-rocm:v0.5.14-rocm720-mi35x-20260708"
     - "Clean the export envs"
   pr-link: https://github.com/SemiAnalysisAI/InferenceX/pull/2198
+
+- config-keys:
+    - dsv4-fp4-mi355x-vllm-agentic
+  description:
+    - "Bump LMCache source build from pinned commit 9229067 to the v0.5.1 release tag (CXX=hipcc BUILD_WITH_HIP=1)"
+    - "Add --no-separate-object-group and --no-l1-use-lazy to the LMCache MP server launch command"
+  pr-link: https://github.com/SemiAnalysisAI/InferenceX/pull/2216