diff --git a/onlykey.nix b/onlykey.nix
index 93f767f..cc17493 100644
--- a/onlykey.nix
+++ b/onlykey.nix
@@ -32,4 +32,5 @@
   };
 
   security.pam.u2f.enable = true;
+  programs.i3lock.u2fSupport = true;
 }