diff --git a/build-constraints.yaml b/build-constraints.yaml
index 03261a15..29d3cc2b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2854,6 +2854,8 @@ packages:
         - network-messagepack-rpc-websocket
         - unicode-show
         - deriveJsonNoPrefix
+        - fakefs
+        - fakepull
 
     "Hans-Christian Esperer <hc@hcesperer.org> @hce":
         # avwx # https://github.com/hce/avwx/issues/2