diff --git a/generate-cookiecutter-products.groovy b/generate-cookiecutter-products.groovy
index 1fc38b3..fe85d37 100644
--- a/generate-cookiecutter-products.groovy
+++ b/generate-cookiecutter-products.groovy
@@ -184,7 +184,8 @@
                             'reclassEnv'         : testEnv,
                             'distribRevision'    : distribRevision,
                             'dockerContainerName': DockerCName,
-                            'testContext'        : 'salt-model-node'
+                            'testContext'        : 'salt-model-node',
+                            'dockerExtraOpts'    : [ '--memory=3g' ]
                         ]
                         testResult = saltModelTesting.testNode(config)
                         common.infoMsg("Test finished: SUCCESS")
diff --git a/test-cookiecutter-reclass-chunk.groovy b/test-cookiecutter-reclass-chunk.groovy
index 8fe0a2b..e0c9710 100644
--- a/test-cookiecutter-reclass-chunk.groovy
+++ b/test-cookiecutter-reclass-chunk.groovy
@@ -33,7 +33,8 @@
                     'reclassEnv': extraVars.testReclassEnv,
                     'distribRevision': extraVars.DISTRIB_REVISION,
                     'dockerContainerName': extraVars.DockerCName,
-                    'testContext': extraVars.modelFile
+                    'testContext': extraVars.modelFile,
+                    'dockerExtraOpts': [ '--memory=3g' ]
                 ]
                 if (extraVars.useExtraRepos) {
                     config['extraRepos'] = extraVars.extraRepos ? extraVars.extraRepos : [:]
diff --git a/test-salt-model-node.groovy b/test-salt-model-node.groovy
index b9c0356..154df3d 100644
--- a/test-salt-model-node.groovy
+++ b/test-salt-model-node.groovy
@@ -73,6 +73,7 @@
               'reclassEnv': workspace,
               'distribRevision': distribRevision,
               'dockerMaxCpus': MAX_CPU_PER_JOB.toInteger(),
+              'dockerExtraOpts': [ '--memory=3g' ],
               'ignoreClassNotfound': RECLASS_IGNORE_CLASS_NOTFOUND,
               'aptRepoUrl': APT_REPOSITORY,
               'aptRepoGPG': APT_REPOSITORY_GPG,