diff --git a/nix/coordinator.nix b/nix/coordinator.nix
index fe946e3..c7fedb8 100644
--- a/nix/coordinator.nix
+++ b/nix/coordinator.nix
@@ -264,6 +264,7 @@ in
 
     systemd.services.buildbot-master = {
       after = [ "postgresql.service" ];
+      path = [ pkgs.ssh ];
       serviceConfig = {
         # in master.py we read secrets from $CREDENTIALS_DIRECTORY
         LoadCredential = [