diff --git a/deps.json b/deps.json
index 54a6b577..69ddd3fb 100644
--- a/deps.json
+++ b/deps.json
@@ -1,7 +1,7 @@
 {
-  "kvspace": "v0.2.9",
-  "kvspace-c": "v0.2.9",
-  "kvspace-durable": "v0.2.9",
+  "kvspace": "v0.2.10",
+  "kvspace-c": "v0.2.10",
+  "kvspace-durable": "v0.2.10",
   "blockmalloc": "v0.1.4",
   "slotsboxmalloc": "v0.1.5"
 }
diff --git a/runtime/src/kv.c b/runtime/src/kv.c
index 7b07687e..554bb492 100644
--- a/runtime/src/kv.c
+++ b/runtime/src/kv.c
@@ -184,6 +184,11 @@ int kvlangKvWatch(kvlangKv_t *k, const char *key, const kvlangXvalue_t *target,
     uint32_t len;
     if (kvspaceWatch(k->h, key, t, tl, tick_ns, &d, &len) != 0)
         return -1;
-    kvlangXvalueCopyMalloc(out, d, len);
+    if (d && len) {
+        out->data = d;
+        out->len = len;
+        out->borrowed = 1;
+        kvlangXvalueMaterialize(out);
+    }
     return 0;
 }