1 files changed, 1 insertions, 0 deletions

diff --git a/hosts/surtr/default.nix b/hosts/surtr/default.nix
index b415bcb8..005d5d20 100644
--- a/hosts/surtr/default.nix
+++ b/hosts/surtr/default.nix
@@ -118,6 +118,7 @@ with lib;
         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