diff --git a/nixos/modules/services/web-apps/gancio.nix b/nixos/modules/services/web-apps/gancio.nix
index e99b689012a6..230e93737fdb 100644
--- a/nixos/modules/services/web-apps/gancio.nix
+++ b/nixos/modules/services/web-apps/gancio.nix
@@ -219,6 +219,11 @@ in
           NODE_ENV = "production";
         };
 
+        path = [
+          # required for sendmail
+          "/run/wrappers"
+        ];
+
         preStart = ''
           # We need this so the gancio executable run by the user finds the right settings.
           ln -sf ${configFile} config.json