1 files changed, 1 insertions, 0 deletions

diff --git a/hosts/sif/default.nix b/hosts/sif/default.nix
index e40c4b79..320f7a0c 100644
--- a/hosts/sif/default.nix
+++ b/hosts/sif/default.nix
@@ -87,6 +87,7 @@ in {
         server ptbtime1.ptb.de prefer iburst nts
         server ptbtime2.ptb.de prefer iburst nts
         server ptbtime3.ptb.de prefer iburst nts
+        server ptbtime4.ptb.de prefer iburst nts
 
         authselectmode require
         minsources 3