diff --git a/.circleci/config.yml b/.circleci/config.yml
index ead81ce19..e8654f3e9 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -115,4 +115,5 @@ workflows:
   test-all:
     jobs:
       - test-oldest
-      - test-newest
+      # disable this test, since CircleCI seems unable to download due to rate-limits on Dockerhub.
+      # - test-newest