diff --git a/.circleci/config.yml b/.circleci/config.yml
index bcf8db2b158..2f05fb9a72e 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -204,8 +204,8 @@ jobs:
       - command_build_and_test:
           nodeNo: "3"
   node4:
-    docker:
-      - image: fkrull/multi-python
+    machine:
+      image: ubuntu-2004:202201-02
     working_directory: ~/OpenAPITools/openapi-generator
     shell: /bin/bash --login
     environment:
@@ -215,7 +215,7 @@ jobs:
       DOCKER_CODEGEN_CLI_IMAGE_NAME: openapitools/openapi-generator-cli
     steps:
       - checkout
-      - command_docker_build_and_test:
+      - command_build_and_test:
           nodeNo: "4"
 workflows:
   version: 2
diff --git a/CI/circle_parallel.sh b/CI/circle_parallel.sh
index 4ccb585afed..b5baa82c960 100755
--- a/CI/circle_parallel.sh
+++ b/CI/circle_parallel.sh
@@ -9,15 +9,6 @@ set -e
 
 export NODE_ENV=test
 
-function cleanup {
-  # Show logs of 'petstore.swagger' container to troubleshoot Unit Test failures, if any.
-  if [ "$NODE_INDEX" != "4" ]; then
-    docker logs petstore.swagger # container name specified in circle.yml
-  fi
-}
-
-trap cleanup EXIT
-
 if [ "$NODE_INDEX" = "1" ]; then
   echo "Running node $NODE_INDEX to test 'samples.circleci' defined in pom.xml ..."
   java -version