diff --git a/.circleci/config.yml b/.circleci/config.yml
index aef5929b4e2..bd48cf821fa 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -336,7 +336,7 @@ jobs:
     executor:
       class: medium+
       name: sb_node_14_browsers
-    parallelism: 13
+    parallelism: 12
     steps:
       - git-shallow-clone/checkout_advanced:
           clone_options: '--depth 1 --verbose'