diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1a067007..d3ad42ed 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -12,9 +12,9 @@ jobs:
       - checkout
       - restore_cache:
           keys:
-            - env-v3-{{ .Branch }}-
-            - env-v3-master-
-            - env-v3-
+            - env-v4-{{ .Branch }}-
+            - env-v4-master-
+            - env-v4-
       - run:
           name: Setup git-annex
           command: |
@@ -36,7 +36,7 @@ jobs:
               python -m pip install --no-cache-dir -U datalad datalad-osf
 
       - save_cache:
-          key: env-v3-{{ .Branch }}-{{ .BuildNum }}
+          key: env-v4-{{ .Branch }}-{{ .BuildNum }}
           paths:
             - /opt/circleci/git-annex.linux
             - /opt/circleci/.pyenv/versions/3.9.4