diff --git a/.circleci/config.yml b/.circleci/config.yml
index 2f008df257..6d08e515a1 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -233,7 +233,7 @@ jobs:
       - capture_test_logs
 
   acceptanceTestsCliqueBft:
-    executor: besu_executor_xl
+    executor: besu_executor_med
     steps:
       - prepare
       - attach_workspace:
@@ -242,7 +242,7 @@ jobs:
           name: AcceptanceTests (Non-Mainnet)
           no_output_timeout: 20m
           command: |
-            ./gradlew --no-daemon acceptanceTestCliqueBft
+            ./gradlew --no-daemon --max-workers=1 acceptanceTestCliqueBft
       - capture_test_results
       - capture_test_logs