diff --git a/roles/jenkins/master/files/config.xml b/roles/jenkins/master/files/config.xml
index 55843eef22..defe790ddf 100644
--- a/roles/jenkins/master/files/config.xml
+++ b/roles/jenkins/master/files/config.xml
@@ -2,8 +2,8 @@
 <hudson>
   <disabledAdministrativeMonitors/>
   <version>1.0</version>
-  <numExecutors>2</numExecutors>
-  <mode>NORMAL</mode>
+  <numExecutors>0</numExecutors>
+  <mode>EXCLUSIVE</mode>
   <useSecurity>true</useSecurity>
   <authorizationStrategy class="hudson.security.ProjectMatrixAuthorizationStrategy">
     <permission>com.cloudbees.plugins.credentials.CredentialsProvider.Create:mizdebsk</permission>