diff --git a/src/json-crdt/__bench__/package.json b/src/json-crdt/__bench__/package.json
index 8b13a4454d..9e8c07fb14 100644
--- a/src/json-crdt/__bench__/package.json
+++ b/src/json-crdt/__bench__/package.json
@@ -10,7 +10,7 @@
     "bench:codecs:sizes": "npx ts-node bench.codecs.sizes.ts"
   },
   "devDependencies": {
-    "@automerge/automerge": "2.2.9",
+    "@automerge/automerge": "3.1.1",
     "@collabs/collabs": "0.13.4",
     "diamond-types-node": "1.0.2",
     "loro-crdt": "^0.4.1",
diff --git a/src/json-crdt/__bench__/yarn.lock b/src/json-crdt/__bench__/yarn.lock
index f3b037ca6e..ef95693ac9 100644
--- a/src/json-crdt/__bench__/yarn.lock
+++ b/src/json-crdt/__bench__/yarn.lock
@@ -2,12 +2,10 @@
 # yarn lockfile v1
 
 
-"@automerge/automerge@2.2.9":
-  version "2.2.9"
-  resolved "https://registry.yarnpkg.com/@automerge/automerge/-/automerge-2.2.9.tgz#d575f888dde39d0483e0b6bc6f5316740e996689"
-  integrity sha512-6HM52Ops79hAQBWMg/t0MNfGOdEiXyenQjO9F1hKZq0RWDsMLpPa1SzRy/C4/4UyX67sTHuA5CwBpH34SpfZlA==
-  dependencies:
-    uuid "^9.0.0"
+"@automerge/automerge@3.1.1":
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/@automerge/automerge/-/automerge-3.1.1.tgz#da06f8b2b9162616a90c01c2a0e17da1338bfa50"
+  integrity sha512-x7tZiMBLk4/SKYimVEVl1/wPntT9buGvLOWCey9ZcH8JUsB0dgm49C0S7Ojzgvflcs2hc/YjiXRPcFeFkinIgw==
 
 "@collabs/collabs@0.13.4":
   version "0.13.4"
@@ -175,11 +173,6 @@ tslib@^2.0.1:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.8.1.tgz#612efe4ed235d567e8aba5f2a5fab70280ade83f"
   integrity sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==
 
-uuid@^9.0.0:
-  version "9.0.1"
-  resolved "https://registry.yarnpkg.com/uuid/-/uuid-9.0.1.tgz#e188d4c8853cc722220392c424cd637f32293f30"
-  integrity sha512-b+1eJOlsR9K8HJpow9Ok3fiWOWSIcIzXodvv0rQjVoOVNpWMpxf1wZNpt4y9h10odCNrqnYp1OBzRktckBe3sA==
-
 yjs@13.6.27:
   version "13.6.27"
   resolved "https://registry.yarnpkg.com/yjs/-/yjs-13.6.27.tgz#8899be929d57da05a0aa112d044a5c204393ab7b"