diff --git a/vector/replay-capture/Dockerfile b/vector/replay-capture/Dockerfile
index b556283f68198..0715ef32a54ae 100644
--- a/vector/replay-capture/Dockerfile
+++ b/vector/replay-capture/Dockerfile
@@ -7,6 +7,9 @@ COPY vector.yaml .
 # evaluate with yq, basically to expand anchors (which vector doesn't support)
 RUN yq -i e 'explode(.)' vector.yaml
 
+# fork of vector from this branch: https://github.com/frankh/vector/tree/main
+# includes 2 fixed: 1 to make Kafka temporary errors return 500 not 400
+# and 1 to allow us to set response body on the http source
 FROM frankh/vector:0.41.0-patched
 
 COPY --from=config-builder /config/vector.yaml /etc/vector/vector.yaml