diff --git a/module/home-manager.nix b/module/home-manager.nix
index 4a04156..476129f 100644
--- a/module/home-manager.nix
+++ b/module/home-manager.nix
@@ -138,7 +138,10 @@
           "npm:pi-web-access@0.15.0"
           "npm:pi-mcp-adapter@2.15.0"
           "npm:pi-subagents@0.37.2"
-          "npm:@aliou/pi-guardrails@0.16.0"
+          {
+            source = "npm:@aliou/pi-guardrails@0.16.0";
+            extensions = [ "-extensions/herdr/index.ts" ];
+          }
         ];
       };
     };