diff --git a/.circleci/config.yml b/.circleci/config.yml
index b7b6b7c..dded634 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,4 +1,4 @@
-version: 2
+version: 2.1
 # --- Constants --- #
 
 globals: