diff --git a/README.md b/README.md
index 48ab63b..1f559c9 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,23 @@
 If your volume is inside a container - you can use ```docker cp $ID:/var/jenkins_home``` command to extract the data.
 Note that some symlinks on some OSes may be converted to copies (this can confuse jenkins with lastStableBuild links etc)
 
+# Setting the number of executors
+
+You can specify and set the number of executors of your Jenkins master instance using a groovy script. By default its set to 2 executors, but you can extend the image and change it to your desired number of executors :
+
+```
+# executors.groovy
+Jenkins.instance.setNumExecutors(5)
+```
+
+and `Dockerfile`
+
+```
+FROM jenkins
+COPY executors.groovy /usr/share/jenkins/ref/init.groovy.d/executors.groovy
+```
+
+
 # Attaching build executors
 
 You can run builds on the master (out of the box) but if you want to attach build slave servers: make sure you map the port: ```-p 50000:50000``` - which will be used when you connect a slave agent.