diff --git a/daemon-node.js b/daemon-node.js
index cbbae43..3894a79 100755
--- a/daemon-node.js
+++ b/daemon-node.js
@@ -37,7 +37,7 @@ async function main () {
   }
 
   const cid = await client.dag.put(data, {
-    format: 'dag-test',
+    storeCodec: 'dag-test',
     hashAlg: 'sha2-256'
   })
 
diff --git a/in-process-node.js b/in-process-node.js
index 41eb7ad..8241bf7 100755
--- a/in-process-node.js
+++ b/in-process-node.js
@@ -26,7 +26,7 @@ async function main () {
   }
 
   const cid = await node.dag.put(data, {
-    format: 'dag-test',
+    storeCodec: 'dag-test',
     hashAlg: 'sha2-256'
   })