diff --git a/.changeset/famous-oranges-pay.md b/.changeset/famous-oranges-pay.md
new file mode 100644
index 000000000..8486fa283
--- /dev/null
+++ b/.changeset/famous-oranges-pay.md
@@ -0,0 +1,5 @@
+---
+"@langchain/langgraph": patch
+---
+
+Improve graph execution performance by avoiding unnecessary cloning of checkpoints after every tick
diff --git a/libs/langgraph/src/channels/base.ts b/libs/langgraph/src/channels/base.ts
index 5031853f4..9fa8ff2ea 100644
--- a/libs/langgraph/src/channels/base.ts
+++ b/libs/langgraph/src/channels/base.ts
@@ -169,19 +169,12 @@ export function createCheckpoint<ValueType>(
     }
   }
 
-  const newVersionsSeen = {} as Record<string, Record<string, number | string>>;
-  for (const k in checkpoint.versions_seen) {
-    if (!Object.prototype.hasOwnProperty.call(checkpoint.versions_seen, k))
-      continue;
-    newVersionsSeen[k] = { ...checkpoint.versions_seen[k] };
-  }
-
   return {
     v: 4,
     id: options?.id ?? uuid6(step),
     ts: new Date().toISOString(),
     channel_values: values,
-    channel_versions: { ...checkpoint.channel_versions },
-    versions_seen: newVersionsSeen,
+    channel_versions: checkpoint.channel_versions,
+    versions_seen: checkpoint.versions_seen,
   };
 }