diff --git a/stage/testing/ubuntu/mantic/package-model.json b/stage/testing/ubuntu/mantic/package-model.json
index 69aa15c1..2c693f6a 100644
--- a/stage/testing/ubuntu/mantic/package-model.json
+++ b/stage/testing/ubuntu/mantic/package-model.json
@@ -32,6 +32,10 @@
       "source": "https://github.com/regolith-linux/childe.git",
       "ref": "r3_1-beta1"
     },
+    "xdg-desktop-portal-regolith": {
+      "source": "https://github.com/regolith-linux/xdg-desktop-portal-regolith.git",
+      "ref": "r3_1-beta1"
+    },
     "ubiquity-slideshow-regolith": null
   }
 }
\ No newline at end of file