diff --git a/.circleci/config.yml b/.circleci/config.yml
index 7bee2d371..208e0adba 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -47,7 +47,7 @@ jobs:
 
       - restore_cache:
           keys:
-          - v1-emsdk-{{ checksum "emsdk/Makefile" }}-v6
+          - v1-emsdk-{{ checksum "emsdk/Makefile" }}-v6-
 
       - run:
           name: build