diff --git a/modules/default.nix b/modules/default.nix
index edcb1d5..b8b5e15 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -88,6 +88,9 @@
       services.smartd.enable = lib.mkDefault true;
       # Network monitoring
       services.vnstat.enable = true;
+      environment.etc."vnstat.conf".text = ''
+        UseUTC=1
+      '';
 
       # Support for exotic file systems
       boot.supportedFilesystems = lib.optional config.sbruder.full "ntfs";