diff --git a/lib/llhttp/llhttp.wasm b/lib/llhttp/llhttp.wasm
index 230a13158cd..52db42fb67d 100755
Binary files a/lib/llhttp/llhttp.wasm and b/lib/llhttp/llhttp.wasm differ
diff --git a/package.json b/package.json
index 001bee54184..d529712fd50 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "bench": "concurrently -k -s first npm:bench:server npm:bench:run",
     "bench:server": "node benchmarks/server.js",
     "prebench:run": "node benchmarks/wait.js",
-    "bench:run": "CONNECTIONS=1 node benchmarks/benchmark.js && CONNECTIONS=50 node benchmarks/benchmark.js",
+    "bench:run": "CONNECTIONS=1 node --experimental-wasm-simd benchmarks/benchmark.js && CONNECTIONS=50 node --experimental-wasm-simd benchmarks/benchmark.js",
     "serve:website": "docsify serve .",
     "prepare": "husky install"
   },