diff --git a/tests/pillar/client.sls b/tests/pillar/client.sls
index ff5a5db..97671a7 100644
--- a/tests/pillar/client.sls
+++ b/tests/pillar/client.sls
@@ -2,8 +2,8 @@
   client:
     enabled: true
     strata:
-    - ntp.cesnet.cz
-    - pool.ntp.org
+    - ntp-01
+    - ntp-02
   server:
     enabled: false
     mode7: false