diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0016728d..3dfbbbe1 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -28,7 +28,7 @@ workflows:
 jobs:
   test:
     parallelism: 5 # parallel containers to split the tests among
-    machine: true
+    machine:
       image: "ubuntu-2004:202111-02"
     environment:
       _JAVA_OPTIONS: "-Xms1024m -Xmx2048m"
@@ -148,7 +148,8 @@ jobs:
           path: ~/junit/
           destination: testartifacts
   build:
-    machine: true
+    machine:
+      image: "ubuntu-2004:202111-02"
     environment:
       _JAVA_OPTIONS: "-Xms2g -Xmx2g"
       _SERVICE_OCCURENCE: 5