diff --git a/.circleci/config.yml b/.circleci/config.yml
index 75850a9..ff8530b 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,7 +1,7 @@
 # https://circleci.com/docs/2.0/workflows/#using-workspaces-to-share-data-among-jobs
 defaults: &defaults
   docker:
-    - image: quay.io/pantheon-public/build-tools-ci:4.x
+    - image: quay.io/pantheon-public/build-tools-ci:6.x
   working_directory: ~/example_drops_7_composer
   environment:
     #=========================================================================