diff --git a/feedstock/requirements.txt b/feedstock/requirements.txt
index f9f7f91..72ff300 100644
--- a/feedstock/requirements.txt
+++ b/feedstock/requirements.txt
@@ -1,5 +1,6 @@
 leap-data-management-utils==0.0.12
 git+https://github.com/pangeo-forge/pangeo-forge-recipes@feature/concurrency-control
+httpfs-sync
 zarr==2.16.1
 gcsfs
 apache-beam[gcp]