diff --git a/app.config.js b/app.config.js
index d090b7d69f6713ca30ceec7fe93eef859b1a2a86..99431cdb3444d83b0d8f1ef4721c21fc59046fa8 100644
--- a/app.config.js
+++ b/app.config.js
@@ -48,7 +48,7 @@ export default {
         matomoSiteId: 131,
         nextcloudBaseURL: 'https://cloud.tugraz.at',
         nextcloudName: 'TU Graz cloud',
-        pdfAsQualifiedlySigningServer: 'https://sig-test.tugraz.at',
+        pdfAsQualifiedlySigningServer: 'https://sig-demo.tugraz.at',
         hiddenActivities: ['dbp-signature-verification-full']
     },
     production: {