diff --git a/Jenkinsfile b/Jenkinsfile
index c3cc0efa745..52f0780adb5 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -136,7 +136,7 @@ def slackNotif() {
  */
 def mavenBuild(jdk, cmdline, mvnName, junitPublishDisabled) {
   def localRepo = ".repository"
-  def mavenOpts = '-Xms1g -Xmx6g -Djava.awt.headless=true'
+  def mavenOpts = '-Xms1g -Xmx4g -Djava.awt.headless=true'
 
   withMaven(
       maven: mvnName,
diff --git a/pom.xml b/pom.xml
index b32caefcaea..5b3715f08d7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -664,7 +664,7 @@
           <configuration>
             <rerunFailingTestsCount>${surefire.rerunFailingTestsCount}</rerunFailingTestsCount>
             <forkedProcessTimeoutInSeconds>3600</forkedProcessTimeoutInSeconds>
-            <argLine>@{argLine} -Dfile.encoding=UTF-8 -Duser.language=en -Duser.region=US -showversion -Xmx1g -Xms1g -XX:+PrintGCDetails</argLine>
+            <argLine>@{argLine} -Dfile.encoding=UTF-8 -Duser.language=en -Duser.region=US -showversion -Xmx2g -Xms2g -XX:+PrintGCDetails</argLine>
             <failIfNoTests>false</failIfNoTests>
             <forkCount>1</forkCount>
             <reuseForks>true</reuseForks> <!-- to work around crash at https://github.com/junit-team/junit5/issues/801 -->