diff --git a/modules/config/xsession.nix b/modules/config/xsession.nix
index 471bdef..d116a0a 100644
--- a/modules/config/xsession.nix
+++ b/modules/config/xsession.nix
@@ -93,6 +93,9 @@ in
       enable = true;
       lockCmd = "${lock-screen}/bin/lock-screen";
       inactiveInterval = 20;
+
+      # lock before suspending/hibernating, see https://github.com/i3/i3lock/issues/207
+      xssLockExtraOptions = [ "--transfer-sleep-lock" ];
     };
 
     systemd.user.startServices = true;