diff --git a/package-lock.json b/package-lock.json
index 8473005..a516936 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,15 +1,15 @@
 {
   "name": "@ssntpl/openclaw-otper",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@ssntpl/openclaw-otper",
-      "version": "0.1.2",
+      "version": "0.1.3",
       "license": "MIT",
       "dependencies": {
-        "@ssntpl/otper-cli": "^0.1.5"
+        "@ssntpl/otper-cli": "^0.1.7"
       },
       "devDependencies": {
         "@types/node": "^20.16.10",
@@ -446,9 +446,9 @@
       }
     },
     "node_modules/@ssntpl/otper-cli": {
-      "version": "0.1.5",
-      "resolved": "https://registry.npmjs.org/@ssntpl/otper-cli/-/otper-cli-0.1.5.tgz",
-      "integrity": "sha512-LOcUU4VxzadXAhAwCJXysW2aGzWPDEDeMr0+9YklhV+T0BaLLZeB91VHB/XRunA94FZJxH5BHQZxefv0n1hw7Q==",
+      "version": "0.1.7",
+      "resolved": "https://registry.npmjs.org/@ssntpl/otper-cli/-/otper-cli-0.1.7.tgz",
+      "integrity": "sha512-cPT4Z0MA6vdbYVxghRUaT9FSWqVc3iImBXnd8fpa9u6CqRKojfE3tZPrSFTfY4qbPrwSyJFA7WnK3KM/lALH9A==",
       "license": "MIT",
       "dependencies": {
         "@oclif/core": "^4.0.30",
diff --git a/package.json b/package.json
index fd6d3a8..e1ba26b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ssntpl/openclaw-otper",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "description": "OpenClaw plugin for Otper boards (https://otper.com) — exposes Otper boards, lists, cards, labels, comments, and today's priorities as agent tools.",
   "author": "SSNTPL <info@ssntpl.com>",
   "license": "MIT",
@@ -39,7 +39,7 @@
     ]
   },
   "dependencies": {
-    "@ssntpl/otper-cli": "^0.1.5"
+    "@ssntpl/otper-cli": "^0.1.7"
   },
   "devDependencies": {
     "@types/node": "^20.16.10",
diff --git a/tools/shared.ts b/tools/shared.ts
index e4fa9e9..889d7fe 100644
--- a/tools/shared.ts
+++ b/tools/shared.ts
@@ -1,4 +1,4 @@
-import { OtperClient, resolveConfig } from "@ssntpl/otper-cli";
+import { OtperClient, resolveConfig, toOtperDateTime } from "@ssntpl/otper-cli";
 
 export interface PluginConfig {
   token?: string;
@@ -52,7 +52,11 @@ export function fmtDate(iso: string | null | undefined): string {
   return iso.replace("T", " ").replace(/\.\d+Z?$/, "").replace(/Z$/, " UTC");
 }
 
-/** Today's date as YYYY-MM-DD HH:MM:SS, used as default `assigned_at`. */
+/**
+ * Otper-formatted "now" (YYYY-MM-DD HH:MM:SS UTC). Otper rejects ISO-8601
+ * strings with milliseconds; this helper matches what its DateTime scalar
+ * accepts.
+ */
 export function nowIso(): string {
-  return new Date().toISOString();
+  return toOtperDateTime();
 }