diff --git a/svelte-app/src/lib/export.ts b/svelte-app/src/lib/export.ts
index 50a27c0..202f88f 100644
--- a/svelte-app/src/lib/export.ts
+++ b/svelte-app/src/lib/export.ts
@@ -585,7 +585,7 @@ export async function deployToIgnition() {
       lastModificationSignature: signature,
       lastModification: {
         actor: 'admin',
-        timestamp: new Date().toISOString(),
+        timestamp: new Date().toISOString().replace(/\.\d{3}Z$/, 'Z'),
       },
     },
   }, null, 2);