diff --git a/dandi/tests/data/dandiarchive-docker/docker-compose.yml b/dandi/tests/data/dandiarchive-docker/docker-compose.yml
index 5a9e75d85..681d6691d 100644
--- a/dandi/tests/data/dandiarchive-docker/docker-compose.yml
+++ b/dandi/tests/data/dandiarchive-docker/docker-compose.yml
@@ -4,8 +4,6 @@
 # <https://github.com/dandi/dandi-api/blob/master/docker-compose.override.yml>,
 # but using images uploaded to Docker Hub instead of building them locally.
 
-version: '2.1'
-
 services:
   django:
     image: dandiarchive/dandiarchive-api